Molly Moon, Micky Minus and the Mind Machine

Molly Moon is on a mission to find her long lost twin brother, Micky, and bring him back to where he belongs. To find him she travels back in time and tangles with an evil six year old named Princess Fang. The princess has some formidable powers of her own and she uses her magical machine to take away Molly's hypnotic powers. But you know what they say about closing a door and opening a window....Molly loses her powers of hypnosis but gains the ability to read minds. Maybe she will be able to save Micky after all.... 410 pages Ages 8-12 (Book 4 in the series)