‘They’re a rum lot!’ says wise old Fred Thursday when hard-living pop group The Wildwood comes to town (look out for Michael Fox, aka Downton’s Andy, as their cool guitarist Ken Wilding).

Safe to say, Wagner-loving Endeavour finds the hedonistic band is not really his thing, either, but he is forced to take an interest when the body of a young builder is discovered at the posh pad where the band are staying…

Someone else who is not impressed with what the group stands for is Joy Pettybon, a prim Mary Whitehouse-style self-appointed guardian of the nation’s morals. But then she receives disturbing anonymous messages and one of her entourage is poisoned.

Could the cases be linked?