$$$ | Netflix
Released: 1970
When her friend goes missing -- possibly at the hands of a serial killer -- while cycling through the French countryside, a British nurse (Pamela Franklin) is desperate to discover her fate. But the locals are unhelpful, and when an enigmatic detective joins the case, she begins to suspect his real motives and identity. This smart and creepily effective genre-bending suspense movie also stars Michele Dotrice, Claude Bertrand and Jean Carmet.