简介：[Followingadvicefromhertherapist,ayoungwomanandherhusbandtrytospiceuptheirflaggingmarriagebytakingpartinsomekinkybondagegames.Meanwhile,thewoman'ssister,acop,ishotonthetrailofaserialkillerwithapenchantforblindfoldsandhandcuffs.Couldthetwoberelated?]