Tato série sleduje napínavá dobrodružství tajného agenta, jehož identita je zahalena tajemstvím. Každý díl přináší nové, globální hrozby a složité mise, které prověřují nejen jeho schopnosti, ale i morálku. Čtenáři se mohou těšit na rychlý spád, nečekané zvraty a poutavý svět špionáže a intrik.
The Sidebottoms, the nightmare neighbours of all time, have moved! Moved in next door to Ben's family... For the gang, Ben, Barney and Jenks, this is a state of emergency and calls for the one and only mighty Agent Z and a penguin...!
More mischief from those practical jokers, the Crane Grove Crew, by the author of the bestselling The Curious Incident of the Dog in the Night-Time .Ben’s repulsive cousin, T.J., comes to stay. He discovers an incriminating videotape of Agent Z activities and blackmails Ben into becoming his slave. Meanwhile, Ben, Jenks and Barney embark on their first film, entitled Invasion of the Killer Bananas. When T.J. disappears, however, the film points towards Ben, Jenks and Barney as murder suspects! In an attempt to clear their names, the boys use all the cunning of Agent Z to try and lure T.J. home and into the hands of the police…