In Gen Z Crossing, worlds will be turned upside down as the characters from the previous novella collection, The Xing, return. In Blue Blood and Walls with Holes, Alyssa Stropolis joins her uncle Jay as he investigates an armed robbery. As a defense attorney, Jay meets Jayden Isaac, who is imprisoned for the offense. During the investigation, Jay and Alyssa run into Jay's friends-members of a Crip set. In The Brain Factory, Jared Kensington takes his grandmother, who has dementia, to a new center, "Brain Developer Solutions." they restore her brain to normal. The solution eventually leads to a problem as Jared's grandmother begins acting weird. This is where he learns that there is more inside her brain than what the people at BDS told him. In The U, Geri Kubota visits the Goddard Space Flight Center as an exchange student from Zambia, and he meets Eugene Ellis. Things go haywire at the center as electronic devices begin to act unusually. Added to this collection of suspenseful novellas is The Philosophy of One, Hearts of Steel and Concrete, and Reporter's Island.