Danny poses as arms dealer Aiden Shaw in order to extract information on the location of terrorist Karim Farouk from a middleman who owes Shaw money. Also, Farouk obtains a clue to the location of the sarcophagus of Cleopatra, and Lexi bonds with Father Chuck when she seeks his help to decipher encoded information.
A vital clue leads Danny and Lexi to an Austrian castle where the Germans may have hidden Cleopatra's sarcophagus during World War II. Also, Fabi rescues Dr. Castillo's kidnapped assistant, Max, and Hardwick reveals information to Fabi and Gwen about others who are searching for Cleopatra.
An unlikely ally reveals to Lexi that an Egyptian official has files which could lead her to Farouk. But in order to get to the information, she must enlist Danny in a dangerous plan while lying to him about the source of her lead. Also, Farouk takes a risk to get back the items he stole from the Pyramids, which he needs in order to fund his operations.
Danny and Lexi follow a clue to the mountains of Spain in search of a lost train car that may have been carrying the sarcophagus of Cleopatra when it disappeared. Also, Lexi crosses paths with antiquities dealer Simon Hardwick, who offers her new information on the Brotherhood of Serapis.
Danny and Lexi must improvise in order to stay alive and out of jail when they’re stuck in Casablanca with both law enforcement and their enemies hot on their trail. Also, Hardwick’s personal investigation into the Brotherhood of Serapis lands him in a dangerous situation.
The FBI offers Danny and Lexi information that will help them in their search for Cleopatra, but only if Danny is able to get his incarcerated father, Patrick, to give up the location of paintings that he helped steal 20 years earlier. Also, Farouk deals with a loose end and takes a big step forward in his master plan.
Danny and Lexi seek out a famed Nazi hunter whose research leads them to Montreal, where they suspect that the last of the Nazis who escaped with Cleopatra may still be alive and in hiding. Also, tensions between Gwen and Fabi come to a head.
After nearly capturing Farouk in a sting operation, Danny and Lexi enlist Hardwick to tap into his underworld contacts in hopes of cornering Farouk before he disappears again. Also, Gwen, fed up with Danny and Lexi’s tactics, arrests Father Chuck for aiding them.
The trail of Cleopatra's sarcophagus leads Danny and Lexi to the Bermuda Triangle, where a contact of Shaw's offers assistance tracking down a smuggler's plane that vanished years earlier. Also, Gwen attracts unwanted attention when she investigates a suspicious money transfer.
Hardwick helps Danny and Lexi try to outmaneuver the Brotherhood. Danny learns shocking revelations that shatter everything he thought he knew about his past.
Secrets are exposed, fates are sealed, and Danny and Lexi’s lives will never be the same after Farouk’s master plan is put into action.
As Danny and Lexi finish tracking down the last of Farouk's black market antiquities, they begin to make plans for their future. But their plans are derailed when the Vatican is attacked by terrorists. A person from Danny's past returns, leading them on a new hunt to recover one of the greatest lost treasures of Asia, the Spirit Banner of Genghis Khan.
The search for Kate Reece takes Danny and Lexi to Vietnam, where they reunite with none other than Aiden Shaw. Lexi's fighting skills are put to the test as the team infiltrates the dangerous Black Lotus - an underground fight club - where they learn about a vicious new terrorist.
A visit with Simon in prison yields new information on the Spirit Banner's last whereabouts, sending the team to Russia.
Danny and Lexi join forces with Levchenko's gang as they journey to Mongolia. Levchenko hopes to find the Spirit Banner for himself, even with the Great Khan's horde in hot pursuit.
In search of the Spirit Banner, Simon attempts to make a deal, unaware that Lexi, Danny and Shaw are on his tail. What they uncover leads them to Hong Kong while Danny becomes increasingly concerned with Violet's control over Lexi.
With a trail of new clues, Danny, Lexi and Violet travel across a dangerous chemical wasteland in Kazakhstan to Aralsk-7, an abandoned bio-weapons facility. Meanwhile, Chuck begins his investigation about how the Vatican and the Spirit Banner are connected.
Danny enlists his estranged father, Patrick, in their quest for the Spirit Banner. Patrick leads them to a secret base in Laos, where he makes a startling admission to Lexi about the secret he's hiding from his son.
After crash-landing in the jungles of Laos, Lexi is gravely injured, leaving Danny and Patrick in a rush to find refuge. Meanwhile, Chuck uncovers new information on the relationship between the Vatican and the CIA.
While their team gets closer to unlocking the location of the Spirit Banner, Danny is forced to pick sides between Lexi and Kate.
The recovered scroll's translation takes Danny, Lexi, Kate and Violet to the snowy tundra of Mongolia, with deadly results.
Lexi is kidnapped after making a shocking discovery. Shaw uses an underworld contact to help him and Danny discover her location and face off against the Kahn's interconnected gang of criminals.
The pieces of the Kahn's end-game fall into place as Danny and Lexi must put their differences aside in order to stop the Kahn and Simon before it's too late.
Realizing they've taken the Kahn's bait - and putting the lives of millions in jeopardy - Danny and Lexi come face-to-face with the Kahn in one final battle above Hong Kong.
