Top-secret smackdown [Mac B, kid spy Volume: #3]by Barnett, Mac 

BTSB Prebound(Orchard Books, 2019)

BTSB #: 091674 Available

Dewey: FAges: 7-10   
AR: 3.6 MG RC: 2.5 3-5 Lexile: 450

Genres: Chapter Books Humorous Fiction Adventure Fiction

Subjects: Tower of London (London, England) - Legends Ravens - Fiction Theft - Fiction Undercover operations - Fiction Adventure fiction Humorous fiction Kings and rulers - Fiction Iceland - Fiction

Summary: There is a legend that if the ravens at the Tower of London ever leave then Britain will fall, so when somebody steals the birds, the Queen calls for Mac B. to find the thief and retrieve them--a mission that takes him to Iceland, where he encounters secret submarines, hungry polar bears, and his arch-nemesis from the KGB.