A TV crew has arrived to use St Vincent's Convent as a location for a spy thriller. The filming becomes all too real when a live gun is fired instead of a replica. Sister Boniface deduces that the bullet was meant for the producer.
Alfie sister Reginald's ex-con brother abruptly shows up at the convent after being released from jail. With nowhere to go, the sisters agree to let him stay.
The body of a high-level government official's secretary is found at the bottom of a staircase - and Sister Boniface claims she was dead before the fall.
The dreamy frontman of buzzy rock 'n' roll band The Queenmakers is found dead in the dressing room, just as they are about to go on for their set. Upon inspection, Sister Boniface finds a peculiar sting on the back of his neck.
When a German mayor visits Great Slaughter to partake in a war memorial ceremony, tragedy strikes; Sister Boniface investigates whether it's a terrible accident or a malicious plan.