A Complexion to Die For

Donna and Ellen's third case uncovers a terrible secret, relating to a new skin treatment ...
Private investigators Donna and Ellen take on a client who has invested in a revolutionary new skin clinic. It's initially a success, and Kathryn, the clinic manager, has her own face treated, to appear younger and more beautiful. Donna can't help being attracted, and a sexual relationship develops.
Then some customers start complaining of problems after treatment.
When Kathryn also has problems, she threatens the clinic with reprisals.
Then she goes missing. Donna is concerned for her safety, and deeply suspicious of the owners of the clinic.
Then there's a murder, that may be connected, and Ellen decides to follow a lead on her own, not realizing that she may be risking her own life ...