Preston and his friends help expose a debit card scam at Jamestown University, but must avoid interfering with the official investigation led by Preston's mother.
Preston deals with his new roommate, his best friend Noah; Amanda and Mitch investigate when an elephant tusk is intercepted in the mail.
Preston helps Noah try win a $50,000 scholarship; Preston's mother and her team search for a scam artist posing as a psychic.
Preston and his friends try to manage a cute girl's overbearing nature; Inspector Wainwright and her team track down a scammer who targets the elderly.
Noah and Preston help Veronica practice for her driving test; Amanda tries to enjoy her vacation, but another social security scam pulls her into a case.
Preston and Noah experience fraternity pledging at Jamestown University; a scam targets the relatives of fallen soldiers.
Preston encounters peer pressure when he tries out for the archery team; catfishing criminals steal money from possible suitors.
Preston reluctantly agrees to tutor the guy who is dating Preston's crush, Veronica; Franklin helps a letter carrier who was attacked on the job.
Preston's friend Veronica wants to move out of her parents' house and into her own apartment; Jamestown University's president receives threatening letters.
Preston tries to keep President's Cafe open; letters containing poisonous chemicals are sent to medical professionals.
When Preston tries to help Noah find a birthday present for his father, they end up buying a phony jersey supposedly worn by Dan Marino.
Preston becomes the reluctant subject of Noah's new passion for filmmaking; Amanda and Mitch employ surveillance tactics to catch a criminal.
Preston is the first freshman to land a spot on the debate team, where he deals with a hard-to-please coach; Amanda and Mitch investigate counterfeit money orders.
A racing wheelchair is stolen; a con artist targets hurricane victims.
The gang helps raise money to cover a schoolmate's tuition after his family falls victim to an investment scam; Amanda's team works to find the criminals responsible.
Veronica's co-worker draws suspicion; Amanda and the team investigate an investment company that seems shady.
Preston is concerned for Veronica when her ex-boyfriend comes to town; Amanda's team looks into identity theft crimes.
The inspectors auction their services for charity; Mitch and Amanda look into a cat-phishing scam.
Preston and his friends compete in the university talent show; the team investigates a fake debt collection agency.
Preston is an on-set movie star consultant; Amanda and Mitch investigate a charity scam.
Veronica is apprehensive about singing the national anthem at a Jamestown University basketball game; Amanda and Mitch investigate a fraudulent lottery scheme.
Preston tries to work up the courage to tell Veronica what he really thinks about her before she leaves for a semester in Italy; Amanda and her team collect evidence against a suspect scamming a local church.
A look back at season 1 episodes "Elephant in the Room" and "Jersey Blues"
A look back at Season 1 episodes "The Long Shot" and "The Slow and the Furious"
A look back at season 2 episodes "Wedding Bell Blues" and "For Whom the Bell Tolls"
A look back at season 1 episodes "We Take Care of Our Own" and "Threatening Letters"
A look back at season 1 episodes "Semper Phi" and "The Heart Is a Lonely Scammer"
Preston and Veronica try to figure out where they stand in their relationship when Veronica returns home from her summer in Italy. Amanda and Mitch investigate a series of post office robberies.
When Preston's friend on the university wrestling team is caught up in the use of illegal steroids, Amanda and Mitch try to find the distributor.
Preston and Veronica try to help Noah who has a crush on an older girl. Amanda, Mitch and her team track down a skeleton key being used to rob P. O. Boxes.
Preston decides to try his hand at stand-up comedy, but doesn't like rejection. Amanda and Mitch investigate forgery of paintings.
Preston starts his physical therapy group but he struggles to open up with the others. Noah confronts the boyfriend of his crush. Amanda is being harassed by a criminal from the Ivory Coast who is scamming investors with fake gold.
Preston leads a campus protest to allow a female player to join the university football team. Amanda and Mitch try to catch a group of thieves stealing from postal trucks.
When Veronica crashes Noah's car, Preston helps her fix it before Noah discovers what happened. Amanda and Mitch look into a,string of threatening letters.
The gang.confronts a photographer who unethically manipulates photos; Amanda and Mitch put a familiar face back behind bars in a fake lottery game.
Amanda has a date with a professor at Jamestown University; Mitch and Amanda look into a phony wedding planner business.
Preston poses as Veronica's boyfriend when her co-worker tries to court Veronica; Cynthia Ren returns to go under cover for Amanda and Mitch as they investigate stolen and smuggled antiquities.
Robberies at a postal facilities are filmed and the suspect appears to be a homeless man. When apprehended Mitch and Amanda learn he's a front for the actual criminal.
Amanda and Mitch investigate the increasing number of counterfeit money orders. But their chief suspect is supposedly dead. Preston runs for student body president on a single issue which causes Veronica to support another candidate.
An insurance scam surfaces that involves bus accidents and people pretending to be hurt. Elsewhere: Preston's first girlfriend visits.
Mitch and Amanda have a case involving the carriers targeted for valuable jewelry in their mail. An crime family may be behind it. Preston gets an interview with a famed reclusive writer but his tough professor doesn't believe him.
Mitch and Amanda look into vacation scams where people arrive at their destinations but nowhere to stay after prepaying. Amanda worries about her promotion. The University bell is disappears leading Preston, Veronica, and Noah to investigate.
Mitch and Amanda learn of a mimic deceptively sell sports memorabilia and set up a sting operation to catch their man. Noah and Preston assist Veronica in helping city kids during spring break but their competitive nature erupts over a chess match.
After a rare parrot is intercepted Mitch and Amanda delve into the world of exotic animal trafficking. Noah is injured and learns about Preston's life when confined briefly to a wheelchair. Preston is devastated to learn him may never walk again.
Mitch and Amanda are on the trail of an expert forger who alters money orders then uses the mail to get them cashed. Preston takes up the cause of an injured athlete who may lose his scholarship. Veronica learns Pres may never walk again.
Amanda and Mitch are on a case of a construction company receiving threatening letters when Mitch opens an envelope with powder. Preston's class assignment is a mock trial where he's defending a position he doesn't believe in.
Mitch and Amanda uncover widespread cases of identity theft, many involving Jamestown University students. Noah and Preston are jealous that Veronica has plenty of free time while they spend every moment studying.
Mitch and Amanda investigate bogus invoices that have been arriving at the Jamestown University bookstore in a mail fraud scheme. It's time for major declaration with Preston sure of his choice while Noah and Veronica have doubts about their future.
Mitch and Amanda's newest case involves identity theft among senior citizens. Mitch enlists Noah's help in making a tribute to Amanda if she takes the promotion. Preston pushes both Veronica and his mom away to show his independence.
A look back at season 2 episodes "Casey Gets Pinned" and "The Great Postal Truck Robbery"
A look back at season 2 episodes "The Art of Stand-up" and "The Bus Stops Here"
The Inspectors investigate a company that helps inventors patent and market their ideas, promising to help people make millions. Also, Amanda announces that she’s planning on breaking up with Preston’s professor. With an upcoming presentation, Preston worries that his professor’s failed relationship with his mother might result in a failing grade for him.
When a no-nonsense science teacher is bitten by a poisonous snake that was sent to her through the mail, the inspectors try to track down the prankster; Veronica feels Preston is getting a little too friendly with the new girl at school.
When a hospital's record system is hacked and held for ransom, the inspectors step in to help with a new tech-savvy member of the team; Veronica auditions as a weather reporter for a local news station.
The inspectors call in a tech services expert who can potentially help them trace the individuals who attacked a letter carrier; Veronica teaches a university class and notices one of her students being negatively influenced.
A prankster who is knocking over mailboxes encounters an exploding mailbox; when Preston joins a new gym on his road to recovery, he encounters bullying.
A designer purse is found to be a fake; Mitch's niece is suspected of stealing from the Wainwrights.
When someone gets scammed into buying fake, prepackaged funeral plans for veterans, the team lures the perpetrator to a veterans' charity ball; Noah's grandfather visits.
A group of thieves steals Christmas gifts from doorsteps; Preston, Noah and Veronica volunteer at the ``Letters to Santa'' program and find a mysterious letter from 1962; they vow to track down the sender and deliver a Christmas surprise.
The Inspectors hunt for somebody targeting teen girls online; Mitch worries that his niece might be targeted next and races to stop her from meeting with her online friend.
Amanda and Georgia investigate a series of post office collection box break-ins; Preston, Veronica, and Noah must find a band to play at the Henry Wainwright Foundation's inaugural event.
A teddy bear filled with illegal contraband is stopped at the post office; Amanda and visiting inspector Eric Lin decide to catch the criminal in the act; a school-wide meme competition is consuming Preston and Noah.
The conductor of an opera receives a threatening letter; Preston and Veronica struggle to decide what to get each other for Valentine's Day, causing them to question their relationship.
Mitch and Amanda must find a scammer before he leaves Jamaica; Veronica pits Preston and Noah against each other over who can collect the most canned food donations before the big game.
An over-the-hill actress and a shifty for-profit college administrator team up to dwindle students who are looking for a career in the arts, and Noah is one of those students. With his ambitions still set on filmmaking, Noah is set on dropping out of Jamestown and enrolling into this"school". The inspectors and Preston step in to save their friend.
Preston is house sitting for his uncle in NYC and his investigative mind starts to wander when he notices some suspicious activity in the office building across the street. Meanwhile, Amanda works on a high-profile check-washing scam in the Big Apple.
When Veronica's grandmother becomes a victim of a foreign lottery scam, the inspectors step in to help, but Veronica worries that her family may be facing another challenge when her grandmother continues to believe that big winnings are on the way.
The inspectors investigate a synthetic opioid case when one of their own accidentally comes into contact with a dangerous substance. Meanwhile, Veronica is worried about an upcoming chemistry exam, and her study partner offers her a boost that he thinks could help.
A journalist at a newspaper receives a ransom letter in the mail stating that the editor has been kidnapped. Meanwhile, Veronica clashes with her JU news producer about the type of stories they should report.
A witness to a bank robbery receives threatening letters in the mail, and the inspectors investigate to find the culprit. Meanwhile, Veronica and Noah are contestants on a college game show to determine who knows Preston better.
A criminal is set free after finding new evidence; Preston must determine whether a student is eligible for suspension.
The Inspectors go to the coast to help with hurricane recovery; Preston, Noah and Veronica volunteer in an emergency shelter; Preston is pushed to his limit when he ventures off alone to find a missing girl.
Preston locates the missing girl but must weather the storm until help arrives; Noah and Veronica help the Inspectors with their rescue mission.
A look back at season 3 episode "Meet Sam"
A look back at season 3 episode "Mitch Knows Best"
A look back at season 3 episode "All About V"
A look back at season 3 episode "Cat in a Coal Mine"
When Cynthia Ren's crime syndicate returns, it's up to Amanda and Mitch to figure out how to stop the fraud; the woman responsible for Preston's father's death is getting out of prison.
Amanda and Mitch investigate a double-billing scheme where patients' insurance is billed for unnecessary treatments and the bills pile up; Amanda and Mitch find that Preston is closer to the crime than they thought.
When a grocery store is robbed, losing hundreds of money orders in the process, Amanda and Mitch investigate; Noah puts on his own play for school.
Scam schools teach young college students how to commit scams; Amanda and Mitch are on the case, with more help from Noah than they could have imagined.
Amanda and Mitch investigate a robbery at a local post office; Preston and Veronica help Noah compete in his favorite live action role-playing game, "Shields and Potions."
A university discovers that a student is using a false identity; the gang must figure out who the student really is.
The Inspectors are on to a holiday scam using fake charity to steal donations; the gang dog-sits a puppy whose owner mistreats her.
After a string of mailbox explosions, Amanda and Mitch are on the case to find the person responsible; the gang helps Noah overcome new pressures when his life starts to change rapidly.
A shipment of makeup contains a chemical harmful to the skin; the gang finds themselves tied up when they help Noah house sit for his aunt.
Turtles are being smuggled through the mail; the inspectors must save the turtles and catch the culprit; the gang takes a trip to the beach, but Preston gets himself into trouble when he becomes jealous of Veronica's new boyfriend.
Scammers take advantage of people after a hurricane; Veronica starts to date a trivia host and enlists Preston to help her with her relationship.
A young student is bullied at a local middle school; the inspectors find that there is more to it than hurtful words; Veronica realizes her new boyfriend isn't who he seems to be.
The inspectors investigate a diamond heist at an airport; Preston and Noah help Veronica get back on her feet after a bad breakup.
Amanda and Mitch go under cover at a local diner to catch the crime family responsible for a diamond heist; Noah enlists Preston and Veronica to help him with an "escape room" opportunity, but they soon realize it is more than just a game.
When a toxic sticker ends up in the hands of a young girl, the inspectors have to find out who is responsible; Preston is excited to work on a political campaign, but has his work cut out for him when he is put in charge of the politician's son.
A college crook decides to seek help from the Inspectors after he gives up on his plans to deliver an acidic spray-rigged package to their desired target; Preston makes a profile on an online dating site and worries about his profile picture.
A restaurant falls victim to a scam; the scam leads back to a big-time cook; Preston wins a good citizen award at Jamestown University.
A former soccer star puts together a fake charity that "funds" a children's soccer team; Preston and Veronica are suspicious of Noah's recent absence.
Mitch and Amanda go across the country to assist on a television show about postal inspectors; Preston is left home alone with Veronica's new dog, but it goes missing and it's up to him to find it.
Mitch and Amanda are called to investigate a roofing scam; Jamestown University holds its annual job fair, but Preston's mind is preoccupied with how his relationship will fare with Veronica after graduation.
The entire inspectors community is hit hard when a police officer dies in the line of duty; Preston and the gang must find the child of the fallen officer before another tragedy occurs.
Amanda, Mitch and Georgia rush to the courthouse to put away a longtime nemesis; the gang gets ready for graduation and has a hard time saying goodbye.
A look back at season 4 episode "Diagnosis - Negative"
A look back at season 4 episode "Scam School"
A look back at season 4 episode "What's in a Name"
A look back at season 4 episode "Sticker Shock"