And this is critical for fans. The book and the show share a protagonist name (Owen Hendricks) and a premise (lawyer/spy), but the plot of the novel is entirely different from the first season of the show. If you read the book expecting the "Max Meladze" storyline or the trip to Yemen, you won't find it.
A grueling transformation process designed to push recruits to their physical and psychological limits. the recruit books
For the CHERUB book: No. The series is recommended for 12+ due to heavy use of profanity, sexual references, and extreme violence toward minors. For the Alan Drew book: No. It contains mature CIA torture themes. And this is critical for fans