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 father, Alex Cross.Eager to keep solving crimes, Ali and his friends hack into police calls and secretly check out crime scenes to crack the 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 Ali be the one in danger this time?