The jewel that was ours

The Jewel That Was Ours is a crime novel by Colin Dexter, the ninth novel in Inspector Morse series. This novel was written by Dexter after he wrote a screenplay for an episode titled The Wolvercote Tongue in series 2 of the television programme Inspector Morse. Reviews in 1992 were mixed. One compared this with the prior novel, finding it a step down, though still a strong story. The other compared it with the plot in the television episode aired in 1987, and found the novel far better as to plot twists.