A missing agent. A terrorist plot. And one man determined to get justice... An undercover MI5 agent has gone missing. It's up to Julian Mercer and his team to perform the recovery. There's just one problem. They don't know if the agent has been compromised or if he switched sides. Agent Owen Shepherd was tasked with infiltrating an IRA terrorist faction. He's been in deep cover for two years, but now that an attack is imminent,...