''They do say there be a witch in it, and if you let 'un out, there'll be a peck of trouble'Eleven-year-old Egg is having a rough year. Dad has a whole new family and she's sure it's all her fault. The last thing she wants is a mandatory school trip to the spooky Pitt Rivers Museum, but her strange, silver-haired teacher, Mr. Fellgrim, insists. When she's paired with the popular Josh for a museum-wide treasure hunt, Egg thinks her luck might finally be changing.She''s wrong.As the hunt leads them deeper into the eerie, artefact-filled halls, the shadows begin to stretch. Why does Mr. Fellgrim look exactly like a man in a hundred-year-old portrait? And where did the rest of her classmates go?When the museum lights flicker and die, a bone-chilling fog swallows everything. When Egg wakes up, she isn't in the museum anymore. She's staring through silver-tinted glass at a world that has grown impossibly large.Egg is trapped inside the Witch Bottle, one of the museum's prize exhibits. Now, she must find the courage to face Priscilla- a powerful, ancient witch with a wicked plan. If Egg can't find a way out, she'll become much more than just a student on a school trip. She'll be the museum's newest permanent exhibit...