In a classic English country-house murder mystery with a twist, it's the butler who's the victim, rather than the murderer.

When local barrister Frank Amberley takes a wrong turn on his way to visit his aunt and uncle and accidentally discovers a murder, he impulsively protects the young woman he meets at the crime scene. In the course of ferreting out the killer, his disdain for the bumbling police adds comic relief, and he displays true brilliance at solving the crime.