Now in hardcover, the ninth book 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.

This next book in the bestselling UK series follows Peter Grant, an ordinary constable turned magician's apprentice, as he solves crimes across London in a sensational blend of inventive urban fantasy, gripping mystery thriller, and hilarious fantasy caper.