Checkmate to Murder

On a foggy night in Hampstead, a group gathers at an artist's studio during a wartime blackout, where a civil servant and a government scientist engage in a game of chess while Bruce Manaton paints a portrait. Tensions rise with the shocking murder of 'Old Mr. F,' discovered by his Canadian nephew, prompting the arrival of Inspector Macdonald from Scotland Yard. As Macdonald delves into the investigation, he must navigate a complex web of relationships and motives to uncover the truth behind this mysterious crime.