Agent 21: Codebreaker: Book 3
Chris Ryan
Secret agent Zak Darke is back for his third mission – and the stakes have never been higher.
An unknown bomber is conducting a terror campaign in London. After an explosion on the tube leaves someone dead, Zak and his team are brought in to try and work out how this terror cell operates – but clues are scarce and they have no idea where, or when, the bomber will strike next. A teenage boy, currently detained in a young offender’s institute, claims he has the answer – but before Zak can question him, the boy is shot and falls into a coma. Will Zak be able to break the cipher before the bomber strikes again?
Reviews

I loved the action and suspense that was in this book
Lord Chip Fascination 20.08.2021

I like how they used actual codes that where used in the war and I also liked how the bomber used a secret code and his code for Buckingham palace was the long tailed shrike
Anonymous 16.08.2020

I liked Malcolm Mann because he is a genius. I would recommend this book because it is very tense and fast-paced.
General Rapper Pipistrel 11.06.2020