Dementia Trailer (1999)

Dementia is a savage psycho-sensual drama, a dangerous journey into the heart of madness, starring Marisol Padilla Sanchez as a nurse, Patricia Bursiel as her deranged patient and Matt Schulze as the violent man in the middle.

Luisa, a beautiful nurse trainee, estranged from her sadistic ex-convict husband, Sonny, is assigned to provide out-patient care at a beach side estate to Katherine, a young heiress recovering from a total mental breakdown.

As Katherine's condition seems to improve, Luisa opens up to her about her own painful past, and a special attraction develops. then Sonny shows up planning to manipulate both of them, but is even more obsessed by the fortune the heiress is about to inherit.