That Time of Night (2011)

Mr Richard Mimon arrives unexpectedly at a 1920's Diner Party held by Lord Edison, just in time to find their host dead. A training Police Officer, Anthony Cloke, begins an investigation into the death of Lord Edison. Everyone has secrets to hide, and none can hide them well enough, and eventually Anthony comes to a realisation of who did it and gathers the guests in the Sitting Room to reveal the Murder...