What with Pumpkin Hunting, a full moon and a vampire party, the scene is set for some ghoulish Halloween happenings in the fourth quirky mystery by Blue Peter Award - winning team Marcus Sedgwick and Pete Williamson.

Join the wonderfully weird Otherhand family and their faithful guardian, Edgar the raven, and discover the dark secrets of Castle Otherhand.

It's Halloween and the Otherhands are enjoying the Annual Pumpkin Hunt. And there are preparations to be made for the Great Halloween Ball. Minty is all a-fluster. Solstice is busy spraying fake cobwebs everywhere. Valevine is in charge of disorganising everyone's carefully laid plans, and Cudweed seems hungrier than ever and oddly preoccupied with 'fresh brains'.

In fact when Silas, Valevine's long lost brother, turns up with Samantha, the Otherhands would be well-advised to check out their guests. It's not long before wily Edgar works out that there's a preponderance of vampires and not all of them have false teeth. Just when he's about to solve the latest mystery at Otherhand Castle, the lights go out...