by G. Penn
Kimberly, Claira, and Ariel met Bast, a mysterious black cat, on their first adventure in The Portal, book one of the Museum Mysteries series. Bast has returned, along with her friend Maximus, a large black Labrador with a bionic eye, to ask them to go on another adventure. A young girl is shipwrecked on an island and needs their help. Will they agree to enter the dark portal with Bast?