With the action centring on a busy and rather deadly ward at Cowley General, this episode could be confused with a very dark, retro episode of Holby!

When a police informer is transferred there from prison, Endeavour and Thursday must keep him safe but the crook is assigned to the notorious bed 10, where patients seem to die unexpectedly…

When Chief Supt Bright becomes a patient on the ward and a woman whose husband died in bed 10 is killed, matters become more complicated.

Meanwhile, there’s a secret assignation for Endeavour, who suffers dressings-down from both his ex, Monica, and the mother of his former fiancée.