When Phoebe finds a beautiful antique at a flea market, she's not sure whether it's as valuable as it looks. But inside she discovers something priceless--a century-old letter from a young girl to her sister. It includes a 'spell' for bringing people closer together: a list of clues leading all through London. Each stop along the way adds up to magic. Phoebe is stunned. This is exactly what she needs--her sister, Alice, leaves for university soon, and in the meantime, she wants nothing to do with Phoebe. They used to be so close. Now that Phoebe has this magical list, maybe she can fix everything! That is, unless she accidentally makes everything worse instead.