A story from the collection Do Not Exceed the Stated Dose. Itâs Christmas week and thereâs been a grisly discovery in Santaâs Grotto: the head of the toy department has been murdered, a crossbow arrow through his chest. But when the store manager arrives, the body has vanished. Itâs up to shop assistant Pauline, Santa, and his elf to get to the bottom of the mystery.