The film is somewhat inspired by Alfred Hitchcock's Rear Window (1954) and the paranoia classic George Cukor's Gaslight (1944).

Her husband, Carlos, leaves frequently on business trips so Martha spends most of her time alone, with her pet cat, Fedra, as her only companion.

After overhearing a few things, Martha, already prone to fantasizing away her boredom and loneliness, begins to suspect that Julia has killed her sick husband.

When Rita, Matha's close friend, stops for a visit with her young daughter, Yolanda, Martha tells her that she thinks Julia has a lover and that they both had killed Victor.

The building's landlord, Ricardo, a sculptor and artist living downstairs, works on his sculptures and pottery when he is not fussing over his dogs and pigs.