Blonde On The Run(1985)

Ms. Wright is seeing shrink Dr. Vaughn for help with her sex addiction. Soon, his nurse, Nurse Jarvis, is murdered. Unaware of this, Ms. Wright goes home to spend time with her roommate Janet, before hosting a party for Jack and Bill, who are actually the cops investigating the murder of Nurse Jarvis. Interviewing Ms. Wright the next day, Jack and Bill run into Janet and Lillian, and there is another murder. Jack and Bill investigate further and deduce who the murderer is.