ThefilmtellsthestoryofMarthaHoffman,aneccentricandwealthypatronwhoiscommittedtoapsychiatricclinicbyherdaughters.TheexpertwitnessCasaresinvestigateswhetherthisisaschemetocontroltheirmother’sfortuneorifMarthatrulysuffersfromaformofdementiathatendangersherwell-beingandthatofherfamily.