

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.
Mark Brotherhood
BBC One
12
57 min

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.
Sep 25, 2024

On 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.
Oct 2, 2024

A 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.
Oct 9, 2024

A 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.
Oct 16, 2024

John 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.
Oct 23, 2024

A 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?
Oct 30, 2024

John 'Ludwig' Taylor / James Taylor

Lucy Betts-Taylor

DI Russell Carter

DC Simon Evans

DS Alice Finch

DCS Carol Shaw

Holly Pinder

Henry Betts-Taylor

Chief Constable Ziegler