The Mafu Cage
The Mafu Cage ( also released as My Sister , My Love , Deviation and Don't Ring the Doorbell ) is a 1978 American psychological thriller film directed by Karen Arthur , and starring Carol Kane and Lee Grant . 
<triplet> The Mafu Cage <subj> Karen Arthur <obj> director <subj> Carol Kane <obj> cast member <subj> Lee Grant <obj> cast member