It"s 1971. Though the events of the past year weigh heavily on Endeavour"s mind, there"s no chance of light duties at the CID. Endeavour finds himself right back in the thick of it, investigating suspected IRA retaliations, the murder of a local cabbie, and the peculiar death of a college don. But as Endeavour struggles with his inner demons, the team wonders if he"s beyond the point of no return.