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.

David Mitchell
John 'Ludwig' Taylor / James Taylor

Anna Maxwell Martin
Lucy Betts-Taylor

Dipo Ola
DI Russell Carter

Gerran Howell
DC Simon Evans

Izuka Hoyle
DS Alice Finch

Dorothy Atkinson
DCS Carol Shaw

Sophie Willan
Holly Pinder

Dylan Hughes
Henry Betts-Taylor

Ralph Ineson
Chief Constable Ziegler
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