School, mysteries, crime-solving - just an ordinary day for Ali Cross! Ali has helped to solve two big cases and he knows he has what it takes to follow in the footsteps of his famous detective father, Alex Cross. Eager to keep solving crimes, Ali and his friends hack into police calls and try to crack their cases themselves. But when Ali witnesses something terrible, he must grapple with some tough questions about what it means to be a detective, and a detective's son. Will he be the one in danger this time?