Tourmaline and the Museum of Marvels

Ever since she fell into the Source of all magic, Tourmaline seems to have developed strange new powers that are causing chaos. She can't work out how to control them and it's exhausting hiding them from everyone (except her best friends George and Mai). Then Tourmaline receives a mysterious postcard, promising her solutions and sending her on quests to amazing places. But who has sent Tourmaline ...