Gunpowder, Treacle and Shocks. Hettie and Tilly set out to investigate an old crime and a spate of new murders. Why is Mavis Spitforce dressed as a pumpkin? Can Irence Peggledrip really talk to cats from the spirit world? Did Milky Myers murder his family on Halloween, longer ago than anyone can remember? Questions that the tabby duo must answer before the latest case for The No. 2 Feline Detective Agency can be solved. As the November fog closes in, where will the killer strike next - and will there be enough samosas to go round?