Dive into the world of espionage with A Girl's Guide to Spying: 1 (A Rose Patrol Mystery), an unputdownable historical mystery series from bestselling author Holly Webb. This gripping adventure is set during the First World War, exploring the little-known fact that Girl Guides worked undercover for MI5.

Follow Phyl as she is reluctantly dragged to the Girl Guides by her sister, Annie, only to find herself thrust into the adventure of a lifetime when her Guide captain recruits her as a messenger for MI5. While eager to support the war effort, Phyl struggles under the scrutiny of the grumpy Major Warren. When Major Warren suddenly disappears, Phyl and Annie suspect he might be a double agent, forcing the sisters and their Rose Patrol friends to solve the mystery before time runs out.

• Historical mystery set during the First World War involving MI5 espionage.
• Features sisters Phyl and Annie solving a high-stakes mystery surrounding a missing officer.
• Part of the Rose Patrol Mystery series.
• Written by bestselling author Holly Webb.
• Perfect for fans of historical fiction mysteries like the Murder Most Unladylike series.

• Brand: Oneworld Publications
• Author: Webb, Holly
• Binding: Paperback
• Language: English
• Reading Age: 9 - 12 years
• Grade Level: 3 - 4
• Print Length: 304 pages
• Publication Date: February 12, 2026
• ISBN-13: 978-1836431213
• Dimensions: 130x25x198mm (Approx. 5.1 x 1.0 x 7.8 inches)
• Weight: 212g

This book offers a gripping, believable mystery full of courage and quick wits, bringing the past vividly to life for young readers interested in military history and espionage.