Abandoned and filled with a mysterious past, Holy Angel School for Girls is about to reveal its secrets of betrayal, jealousy, and vengeance. Rumours of haunting, paired with the desire to forget the painful tragedy that took place years before, have kept the truth buried with the innocent victims.

Rebecca Ryan has been working as an undercover agent for the Organised Crime Division (OCD) posing as a taxi driver, while investigating London's south-side mob. When she finds her young daughter Lynn brutally murdered she fears her cover has been blown wide open, so she turns renegade and begins a brutal campaign of vengeance against the mob she believes killed her daughter. As she trawls the seedy depths of London's underworld hunting down her daughter's killers, the lines between good and evil, right and wrong begin to blur as do her notions of justice and revenge. It falls to the world-weary OCD agent Darius Cuise and his newly-assigned, hot-tempered partner Abby Barrett to track down Rebecca and bring her in before all hell breaks loose.

When your in The Syndicate you're in for life. This is the prospect facing Matthew Palmer, a hearless but efficient, deadly but impeccably neat assassin and confirmed Michael Caine fan. But Palmer has found love and wants out, even though he knows that wanting out can make you very quickly dead in London's sinister underworld.