Whilst Endeavour sees in 1970 at a Venetian opera, a grisly murder on an Oxford towpath speaks to Thursday’s intuition. Back in Oxford, Endeavour meets a kindred spirit.

England, 1651. The deadly Highwayman ‘The Knightmare’ and his sidekick stalk the dark streets of London. But when they find loot that’s not of this world, they come face to…