Past and present collide in Oxford, as the auction of a priceless Faberge Egg gets underway at Lonsdale College. It soon attracts the attention of an infamous international thief – and the police – when a failed burglary attempt is reported. However, they soon have a bigger case to solve, as a series of gruesome deaths have Morse and Thursday searching for a serial killer. Meanwhile, newly-promoted Endeavour struggles with his role as he’s forced to mentor young detective constable George Fancy.