When a well-known judge is found dead in a police cell and a sinister discovery is made on the 1.40 train into London weeks later, court missionary Robert Elliott and surgeon Tom Sharpe are plunged into a dangerous mystery of wartime espionage and corruption. As Elliott offers to help secure the future of the judge's son and housekeeper Elsie Sowerby, little does he realise the extent of a deception that stretches to the top of the British intelligence service. With a secret 'arrangement' running behind the closed doors of department MO5, will Elsie's awakening love and a series of cryptic watercolour paintings unravel the mystery before time runs out? In the dark and distorted world of spying nothing is ever what it seems. The only certainty is that no one is safe!