CRIMES AT THE TENNIS CLUB is one of the weakest gialli I've watched this far, a completely tame and tiresome effort about a university professor having an affair with one of his students. A minor blackmail plot plays out and there's a requisite death too, but no tension at all, just mildly sleazy characters and the usual late '60s backdrop of hippies, sex and nudity.
Review of Delitto al circolo del tennis
