A missing train full of foreign athletes lead Delilah and Julius to Ms. Deeds and her plot to annihilate the planet and start an underground civilization.
It starts off innocently enough: all D&J have to do is catch Dr. Dismay in the act of an illegal exchange. But the plot thickens when the scientist involved has possible ties to the disappearance of Delilah's parents. Can D&J stop the good Doctor from spreading a virus among the innocent?
The entire planet, is plunged into the dark ages when the flirtatiously sexy, yet sinister Ice steals the world's power
Delilah is suspected of being a mole in the academy, and must go undercover to prove her innocence.
Delilah and Julius head to Mexico to investigate a missing archeologist, and to solve the mystery of an ancient artifact with healing powers.
A nearby spy school is disbanded by crippling fear gas and Delilah and Julius race to save The Academy from the same fate.
Delilah and Julius are sent to turn the lights back on when someone drains Tokyo's electricity.
Going undercover at an all girl's school is difficult for Delilah who's comfortable hunting super villains but out of her element with regular teenagers.
Al is accused of treason and has to fight for his life when Dynimo, a blast from his past, takes him hostage.
Delilah, Julius, and Zoe go undercover at a convention when a mysterious villain commits elaborate crimes modeled from comic book scenes.
Delilah and Julius head to tinsel town when they refuse to believe Dexter J. Hook has become a legitimate movie producer.
Delilah walks into a deadly trap laid by an eye-patch wearing villain who blames Delilah for his missing eye
A garbage barge, a yellow briefcase, and the Zero List all converge at Pier 14 to help D&J bring down an international smuggling ring
Delilah and Julius have to stop Dollface, a half-human, half-android, from creating a robot army to enslave the human race
Delilah and Zoe have to save Julius, Nosey, and Emmet from Ms. Deeds when they travel as backpackers to a monastery in Tibet to find out about the Zero List
The Academy comes to the rescue when Delilah and Julius get frozen solid investigating a cryogenics lab
Rescuing Agent Robinson from the maniacal Timekeeper offers Delilah & Julius a glimpse into the possibility of time travel - and Delilah revisits a memento from her past
There's a showdown at high noon when Delilah and Julius travel to a ghost town and discover just how many villains are after the Zero List.
Under investigation for lying, Julius flees the Academy only to be thrust into the middle of warring super agents who risk the lives of innocent amusement park goers
An insect infestation hinders the Academy when Dr. Thorax threatens Julius with a buggy genetic mutation
Dollface and Roy, the robotic romantic duo, reunite with a plan to take over the world with a solar-powered army, and Delilah and Julius have only until sunrise to stop them.
Copycats make Delilah and Julius realize that fans can be a lot more than flattering - they can be deadly
Delilah and Julius learn that Al holds the key to the Zero list.
Delilah and Julius travel to the past to stop Tibor when his poorly functioning time machine threatens to tear apart space and time.