For Single Swingers Only (1968)

Thrill-seekers Gracie and Gloria move into a singles apartment building. Gracie foolishly falls in love with David, a man she knows is depraved; while Gloria pursues her pleasures in an affair with Ruth, the apartment house manager.

Don Davis
Heidi Anderson as Gracie
Sharon Sanford as Gloria
Leslie Dee
Michael Roth
Jana Lee
Don Davis