Ivy and Maggie have been best friends ever since they were born at exactly the same minute on Friday 13th - twelve years ago. They're always on the lookout for their next adventure, and, when strange and mysterious things start to happen in Crowood Peak, it's up to them to work out what's going on.

After defeating the Crowood Witch and saving the day, Ivy, Maggie and the rest of the Double Trouble Society are on the lookout for their next big adventure.They won't have to wait long - there are three new kids in town and they're all behaving very mysteriously . . .The Double Trouble Society know how to handle witches but can they manage vampires, werewolves and ghosts as well?