AllMovie

On a dark and rainy night, a deeply troubled Antonio drives a saddened Laura home from the hospital after witnessing the painful death of her husband (Antonio's best friend), Tomas. In a series of flashbacks, as water splashes down the darkened car windows, Antonio tells her how he came to marry the seductive and murderous Ana. A long-time morphine addict, he met her while she was living in the gorgeous old home of her ailing grandparents. She wanted the house for herself, so when her grandfather told her he wanted to die, she graciously obliged him. Unfortunately, her doddering grandmother is not ready to go, nor is she easy to get rid of. To this end, Ana agrees to marry the impassioned Antonio only if he promises to help murder her grandmother. Antonio says yes, but after the honeymoon ends, he begins rethinking his hasty vow. The painful death of Tomas has not helped him make his decision.