At the Great Slaughter Mangold Wurzel Festival, the fun comes to an abrupt halt when the body of a young woman is found in the Aunt Sally dummy; Felix Livingstone has wound up in Great Slaughter rather than his intended employment at Scotland Yard.

A TV crew has arrived to use St Vincent's Convent as a location for spy thriller, but the filming becomes all too real when a live gun is fired instead of a replica. Sister Boniface deduces the bullet was meant for the producer.

After spending the night with a pipe-smoking gentleman caller, a woman is found dead with a jigsaw puzzle and a face full of cold cream.

Sister Reginald's ex-con brother Alfie abruptly turns up at the convent after being released from prison. As he has nowhere else 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, but 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.