Millie comes home for Christmas after her first term at school, and all is well at the Castle. But at an outing to the circus she meets a strange girl with a wild, fizzing magic and Millie takes it upon herself - with the help of a slightly reluctant Christopher - to find out more about her, and see if they can help...
Very AU, Tomarry, slash, Harry Potter/Cherstomanci crossover. Growing up as a squib in the Dursley household, Harry is envious of his magical relatives and his powerful cousin. It isn't until his Aunt and Uncle's... unfortunate deaths and he and Dudley are shipped off to Chrestomanci Castle that Harry dares hope life may get a little brighter.
When Millie finds a half drowned boy in the garden, Christopher faces a mystery.