Endeavour

It's the start of 1971 - though wearied from the events of the past year, there's no chance of 'light duties' at the CID. Crestfallen and rarely without a scotch in hand, Endeavour finds himself right back in the thick of it when an explosive murder at an Oxford college has potentially far-reaching political ramifications. Meanwhile, the IRA have made a threat against the life of the Oxford Wanderers' star striker, and Endeavour is tasked with the duty of acting bodyguard.

May 1971, and a cab driver is found dead in his taxi, owing a large debt to a colleague. 

Investigations into his death leads Endeavour and the team first to a nudist colony, where guests are making the most of the spring sunshine, and later to the heart of a blue movie outfit in London's Soho.

Meanwhile at home, Endeavour receives a guest who reminds him of a past he'd sooner forget. As the investigation into the cab driver's murder unfolds, Endeavour starts to retreat from those close to him and appears set on a course of willful self-destruction.

In the midst of the 1971's cruel winter, the foundations of Endeavour and Thursday's relationship are profoundly shaken when Thursday unwittingly discovers the extent of Endeavour's problems are greater than anybody could have suspected.

Meanwhile things at home become quite tense for Thursday and Win when they receive disturbing news from abroad.

When a snowstorm splits CID, and they independently work to solve the murder of a college don, Thursday enlists the help of Dorothea, while Endeavour finds himself stranded at an abandoned hotel, a pawn in a game of gruesome revenge.