The Brand New Novel in the Number One Bestselling Rivers of London Series

Detective Sergeant Peter Grant is taking a much-needed holiday in Scotland, but this trip promises to be anything but relaxing. With his partner Beverley, their young twins, his entire family, and even his boss DCI Thomas Nightingale in tow, the gathering in Scotland's Granite City is large and lively. Nightingale is using the time to train Peter's cousin Abigail in the arcane arts, but this coastal retreat soon uncovers deep history, mystery, myth, and murder.

When a body is discovered in a bus stop, seemingly fresh from the sea, the investigation immediately proves fishy. As something stirs beyond the bay, Peter realizes there is something far stranger lurking in the sky above.

• The latest installment in the acclaimed Rivers of London series by Ben Aaronovitch.
• Features Detective Sergeant Peter Grant on a working holiday in Scotland.
• Explores the history and mysteries of Scotland's Granite City.
• The narrative involves arcane arts training, family dynamics, and a strange murder case.
• This is Book 10 in the Rivers of London series.

• Author: Ben Aaronovitch
• Binding: Paperback
• Edition: 1st Edition
• Language: English
• Print Length: 416 pages
• ISBN-10: 1473226732
• ISBN-13: 978-1473226739
• Dimensions: 128 x 196 x 30 mm (Approx. 5.04 x 7.72 x 1.18 inches)
• Weight: 292 g
• Publisher: Orion
• Publication Date: March 26, 2026

Dive into this witty, inventive, and fast-moving magical adventure from the master of urban fantasy.