The trip of a lifetime - that's what it was supposed to be, paid for with money Gran left thirteen-year old Sam in her will, but when the small plane taking Sam and his Dad back to the airport crashes in the jungle, Sam is left alone and terrified.
Fourteen-year-old Janie Scott is new to London and she meets Benjamin Burrows who dreams of becoming a spy. When Benjamin's father, the mysterious apothecary, is kidnapped he entrusts Janie and Benjamin with his sacred book, full of ancient spells and magical potions. Now the two new friends must uncover the book's secrets in order to find him.