Suspecting foul play, Kay Egan goes undercover to work in a suspicious sex clinic where her sister went to therapy before killing herself. And Kay is not the only one watching the sinister married couple who runs the place.

A therapy clinic is using drugs and sex therapy to aid people with dysfunctions, but the doctor and his wife are using the setup to take advantage of some of the patients. An insurance fraud investigator is trying to find a hidden tape left by his murdered partner. A nurse is investigating the death of her sister by getting a job at the clinic. They join forces to get the evidence against the depraved clinic owners.—Ed Sutton <[email protected]>

Callister Institute is a controversial sex clinic that offers sex treatments for men and women with sexual problems. The clinic is run by Dr. Scott Callister, a lustful quack doctor and serial rapist, and his predatory lesbian wife Jessica Callister, who also works as a doctor at the clinic. They often sleep with their female patients consentingly or just drug them and have their way with them anyway. Kay Egan's sister becomes one of their victims and, guilt-ridden, kills herself in front of Kay. Lt. Dolenz has no probable cause to start an investigation, since no one wants to testify against the doctors. He agrees to send Kay undercover to unofficially investigate the sinister couple as their newest employee. Meanwhile, the Callisters realize that someone in a red sports car is watching them and send their paranoid dorky henchman Warren to get rid of the mysterious watcher for good. The watcher, a P.I. called Barry Mitchum, who's looking for his missing female partner, asks Kay for help. The movie gets a slight tongue in cheek tone on occasion, such as when an air conditioner repairman with a comb over and a summer cold shows up. The movie's rock theme song is played during the end credits.