02E13 - Raising Cain

Allison dreams of a teenager who enter his high school and starts shooting his teachers and classmates. Soon after, she and Detective Scanlon are investigating the kidnapping of 6 year-old Tyler Downey . There's been no ransom note and there is no evidence of violence in the Downey home. Allison starts to dream about Tyler and they manage to find him, shot but still alive, in a garbage dump. As the dreams continue, she learns the identity of the kidnapper/killer but also something else that is quite frightening: 6 year old Tyler will grow up to be the teenager on the shooting spree as a teenager. When she dreams of Tyler graduating as his class valedictorian, she finally realizes what is happening and what the dreams really mean.