The best Pier Giovanni Anchisi’s thriller movies

A series of random suicides in Rome, Italy are attributed to a heatwave, but a young pathologist named Simona—who is working on a thesis about murders disguised as suicides—suspects otherwise. When a young girl associated with Simona's playboy father ends up dead in another apparent suicide, Simona teams up with the girl's priest brother to prove she was murdered and track down the unknown serial killer.

Bernard, a writer in a personal and creative crisis, decides to a short break in a hotel where he had stayed the previous year. The proprietors, old Enrico and his daughter Irma, hide a surly attitude, and the villagers seem to be oppressed by an unspeakable mystery. Bernard is looking for Tilde, a beautiful chambermaid whom he secretly fell in love with, but is shocked to find out that the girl killed herself. However, a hunchbacked photographer suggests she was murdered by Enrico, her lover, because she was pregnant and did not want to abort. Meanwhile, Mario, Enrico's unfriendly son, returns from honeymoon with his seemingly unhappy wife Adriana. The woman, who is kept like a prisoner in her room, tries to contact Bernard, but is soon found dead too. In an increasingly uneasy atmosphere there are two more killings before the culprit is revealed...