Girls For Rent [a.k.a. I Spit on Your Corpse] (1974)

Starring:

• Rosalind Miles
• Georgina Spelvin
• Susie Ewing 

Storyline
Donna Taylor is a young prostitute recruited by a criminal organization known as "The Syndicate" to help blackmail their latest target, a politician. She agrees to carry out their plan of meeting him in his hotel room, drugging his drink, and having pictures taken of him while he is unconscious. She soon finds out the drug she administered was not a simple sedative as she had been told by Sandra and Erica (Rosalind Miles, Shaft's Big Score, The Manhandlers), the two members of the Syndicate accompanying her, but a lethal poison. They threaten to kill Donna if she does not stay silent about the murder. After they depart to dispose of the body, Donna arranges to use the friend's place in Mexico to hide out. Unknown to her, the Syndicate is monitoring her every move....