Books like Contact Zero

An intriguing espionage thriller set around the world.Here are some things in the novel which I liked/disliked:Thumbs Up:1. Highly believable characters.2. An engaging plot centered on the theme of trust and betrayal.3. Well-written and oftentimes witty conversations between the young main characters.Thumbs Down:1. The author liked using ambiguities in describing certain events. It seemed that some readers would most likely research about certain stuffs in order to fully understand the novel.2. Some of the riddles the main characters receive are fairly easy. Having no experience with cryptography, I immediately solved one of these before the main characters did. For Pete's sake, they're secret agents, why can't they break a simple code?Despite the negative stuffs, Contact Zero is still a must-read from espionage fans.