Now in paperback, the ninth novel of the bestselling Rivers of London urban fantasy series returns to the adventures of Peter Grant, detective and apprentice wizard, as he solves magical crimes in the city of London. There is a world hidden underneath this great city.   The London Silver Vaults—for well over a century, the largest collection of silver for sale in the world. It has more locks than the Bank of England and more cameras than a paparazzi convention.   Not somewhere you can murder someone and vanish without a trace—only that’s what happened.   The disappearing act, the...