A young chef from the fine dining world returns to Chicago to run his family's sandwich shop.

A young chef from the fine dining world returns to Chicago to run his family's sandwich shop.

While seeking to unravel the mystery of his twin brother's disappearance, reclusive puzzle-designer John 'Ludwig' Taylor takes on his twin brother James's identity as DCI on Cambridge's major crimes squad.

A young chef from the fine dining world returns to Chicago to run his family's sandwich shop.

A young chef from the fine dining world returns to Chicago to run his family's sandwich shop.

A young chef from the fine dining world returns to Chicago to run his family's sandwich shop.

A young chef from the fine dining world returns to Chicago to run his family's sandwich shop.

A young chef from the fine dining world returns to Chicago to run his family's sandwich shop.

While seeking to unravel the mystery of his twin brother's disappearance, reclusive puzzle-designer John 'Ludwig' Taylor takes on his twin brother James's identity as DCI on Cambridge's major crimes squad.