Psych ‘s Brat Pack obsession shows no sign of letting up.

The USA Network dramedy has tapped ’80s icon Molly Ringwald to guest star during the show’s sixth season, which launches this fall.

Ringwald — whose career got a nice jump-start three years ago thanks to ABC Family’s Secret Life of the American Teenager — will play a nurse at a mental hospital who Shawn suspects is abusing her powers, a la Nurse Ratched from One Flew Over the Cuckoo’s Nest.

Other B-Packers who have passed through Psych in recent years include Judd Nelson and Ally Sheedy.