It stars Giancarlo Giannini, Luciano Pigozzi,[1] Mara Maryl, and Dominique Boschero.

[3] In a cliffside mansion, a young boy named Christian witnesses his sex maniac father murder his mistress in a room lined with mirrors.

The room of mirrors continues to haunt Christian in adulthood, reflecting and amplifying his own sexual obsessions.

[5] He based the screenplay on a story idea conceived by his wife Mara Maryl, who also had a co-starring role in the film.

[1] The film's plot borrowed from both Les Diaboliques and Roger Corman's The Pit and the Pendulum, according to critic Adrian Luther Smith, who continued: "Despite the inevitable constraints of the budget, "Libido" looks refreshingly sharp due to impressive B&W photography (by Romolo Garroni) and some great locations.