A stranger brutally attacks two young women in a park in Portland, Texas. One victim is killed, while the other, miraculously survives. With the help of the survivor, investigators desperately hunt for the killer before he can strike again.

Kelsey Monahon, a young pregnant woman, is found tied up and strangled to death in her Milford, Conn., home; a chance encounter leads investigators to uncover a story of greed involving a dangerous prison pen pal.