Ludwig is a six-part BBC television detective dramedy series starring David Mitchell and Anna Maxwell Martin .

John Taylor (David Mitchell) is a reclusive puzzle maker who publishes puzzle books under the pen name “Ludwig”.

His identical twin brother, James Taylor, is a successful Detective Chief Inspector in the Cambridge police force. James has gone missing, and his wife Lucy (Anna Maxwell Martin) enlists John’s help to solve the mystery.

Pretending to be his brother, John infiltrates the local police station to investigate, and becomes inadvertently embroiled in solving other cases.

This is charming in a very British way. Despite the murders (one each episode) there is little violence.

The plots are intriguing and keep you guessing until the end.

But the real reason for it’s success is David Mitchell. He is the only actor that could pull off the fussy, introverted fake detective.