John Taylor lives in quiet solitude, designing puzzles for a living, under the nom-de-plume of 'Ludwig'. When his identical twin, James, disappears off the face of the earth, John takes over his brother's identity in a quest to discover his whereabouts.

Drama following the life and times of disgraced Labour politician John Stonehouse, a high-flying minister under Prime Minister Harold Wilson’s government vanished from the beach of a large luxury hotel in Florida in November 1974, leaving a neatly folded pile of clothes as he swam into the sea, intent on faking his own death.