Was British army major Robbie Mills leading a secret double life? Or was his posthumous accuser hoodwinking Mills’ family? A true-crime investigation finds out

A true-crime investigation into the supposed secret double life of British army major Robbie Mills. After Mills died in 1955, apparently from an accident on a submarine, a man called John Cotell turned up at his home claiming to be a friend of his – and a fellow spy. Journalist Eugene Henderson tells the troubling tale of Cottell, who rapidly insinuated his way into the Mills family’s lives. Alexi Duggins
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