Genaro Nito Perez

After Walker's former "Kick Drugs Out of America" star student, Joey Prado graduated from the Dallas Police Academy at the top of his class, Walker chooses him to take on a crucial but difficult assignment -- aborting drug dealers' plans to distribute free heroin in the schools.

Walker and Trent Malloy fear for the life of their close friend, Detective Carlos Sandoval, when he goes undercover as a drug dealer and the leaders of the drug operation discover his true identity.