An elderly shopkeeper is found dead, his dog locked in a cupboard. On the kitchen counter is an envelope addressed to The Dinner Lady Detectives... can they solve the case?

Cloaked strangers and danger abound...

Margery and Clementine Butcher-Baker are coming to the end of another busy half term as dinner ladies at Summerview Secondary school. The school is abuzz with chatter about the upcoming break, the local harvest festival, and the fact that maths teacher, Mr Weaver, hasn't turned up to work in days.

When the pair embark on an evening walk, they discover Mr Weaver's body in the woods, with a mysterious symbol painted on the tree beside him. Something susp...