It's Spring, 1972. Two unexplained deaths turn up ties to the Oxford Concert Orchestra, while a body discovered in a derelict warehouse stokes fears that ‘London business' has yet again found its way to Oxford. Thursday and Endeavour's investigation unearths some unsettling connections to cases the duo believed were well and truly behind them.

• Shaun Evans
• Roger Allam
• James Bradshaw
• Sean Rigby
• Caroline O'Neill
• Abigail Thaw
• Sara Vickers
• Anton Lesser