Strange lights, eerie sounds -- there's something spooky happening with a Roman helmet. Join the Museum Mystery Squad as they investigate ancient treasure, mystery mosaics and suspicious centurions.
In the Case of the Vanishing Viking, the Museum Mystery Squad investigate legendary longboats, rare runes and hidden hoards to try to solve their latest mystery.
Izzy and her friends plunge into more primary-school craziness. This time, they decide that their new head teacher is a vampire rat, based on his being slightly scary, having the blinds drawn in his office during the day and the fact he's banned garlic bread at lunchtimes. Now they just have to come up with a plan to vanquish him.