Brian Catalano

J.D. (Zach Braff) strikes up a romantic relationship with an attractive social worker (guest star Elizabeth Bogush, "Beverly Hills, 90210") but he soon learns that Elliot (Sarah Chalke) is not only jealous but thinks his new squeeze is bad news. Meanwhile, Turk (Donald Faison) discovers that Dr. Cox (John C. McGinley) also has romantic designs on Carla (Judy Reyes) while Carla encounters hard stares from her fellow nurses when she strikes up a car-pool friendship with the hated Dr. Kelso (Ken Jenkins).

The return of the blue-paint serial killer, who got away once before, troubles Grissom as the team investigates the murders of four college students.

A young boy witnesses the death of a museum curator but doesn't want to tell anyone about it. Danny investigates the death of an urban golfer found dead on a construction site.

When a religious cult operating in Canada unearths a spacecraft similar to the one Scully discovered in Africa, a plot is set in motion to kill baby William.