EP 1AvailableNow playingEpisode 1
Puzzle setter John ‘Ludwig’ Taylor’s life is upended when his identical twin, DCI James Taylor, disappears. John reluctantly assumes his identity in order to track him down.


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.
EP 1AvailableNow playingPuzzle setter John ‘Ludwig’ Taylor’s life is upended when his identical twin, DCI James Taylor, disappears. John reluctantly assumes his identity in order to track him down.
EP 2AvailableOn a mission to crack the code in his twin’s notebook, John returns to the police station. A frustrated Lucy takes matters into her own hands and plays detective herself.
EP 3AvailableA new case takes Ludwig on a walking tour of Cambridge, where he’s faced with an impossible question. Meanwhile, Lucy goes undercover and makes a grim discovery of her own.
EP 4AvailableA body falls from the fourth storey of a construction site. Was it just a terrible accident, or a perfectly executed murder? When things don’t add up, John questions his abilities.
EP 5AvailableJohn and the gang go back to school to investigate the suspicious death of a headmaster. Lucy sneaks off on a covert mission, and a shocking revelation leaves John reeling.
EP 6AvailableA cryptic late night call from Holly sees Lucy lured into danger. Back at the station, all eyes are on John as the pressure ramps up. Will his cover finally be blown?

John 'Ludwig' Taylor / James Taylor

Lucy Betts-Taylor

DI Russell Carter

DC Ethan Cole

DC Caitlin Sullivan

DCS Carol Shaw

Henry Betts-Taylor

Chief Constable Ziegler

Gerran Howell

Joanne Kemper MP