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 Ò€¦ A new case takes ludwig on a walking tour of cambridge where heÒ€ℒs faced with an impossible question. Meanwhile, lucy goes undercover and makes a grim discovery of her own.

I am a language teacher and an author, and with the help of ludwig, i can ensure what i'm teaching is Ò€¦ 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 Ò€¦ In this bafta nominated series, puzzle setter john Γ’β‚¬ΛœludwigÒ€ℒ taylorÒ€ℒs life is upended when his identical twin, dci james taylor, disappears. John reluctantly assumes his identity in order to track him down.

John reluctantly assumes his identity in order to track him down.