"Why Didn't They Ask Evans?" is a detective mini-series based on Agatha Christie's novel. The son of a vicar, Bobby Jones, goes to play golf with his friend Thomas. However, instead of finding a ball near one of the holes, he discovers a dying stranger. The man gasps his last breath in Bobby's arms, but before dying, he asks a strange question: "Why didn't they ask Evans?" In the man's breast pocket, Bobby finds a photo of a charming girl. Together with his friend Frankie, he decides to unravel this mystery.