Four Flies on Grey Velvet (1971)

A professional rock drummer finds himself in a compromising position after leaving the studio one evening. He's later blackmailed by a mysterious voyeur who wants the musician to know that what he did was not unseen.
In some ways it's a kind of reversal of what the previous two films in the unconnected trilogy did (Bird + Cat), but like its immediate predecessor it has major pacing problems. I was fighting heavy eyelids after just sixty minutes.
The lead actors are mostly apathetic, their friends are perfunctory filler, and the semi-comedic private investigator was like salt in an open wound. The violent giallo kills are the highlight, as usual, but they're few and far between.

2 cushioned silences out of 5