Set within the gritty world of Colombian drug cartels, Tom Bradby depicts the dark underbelly of the crime world with his signature atmospheric plotting.

Rafa Fernandez was always crystal clear about one thing; hell would freeze over before he was dragged into the dirty business that made his father one of the richest and most powerful criminal bosses in the world. But now his father is dead, hell has indeed frozen over and, whether he likes it or not, his father's billions are his.

Unfortunately, the old man's rivals have an eye not just on the drugs' business but the other assets too. Soon his family is under threat: his sister has been kidnapped, and his wife and son living in fear. If they, and he, are to survive, he must become the master of his father's world.

Dr Laura Strong also has dark secrets - some crippling gambling debts accumulated trying to care for her disabled brother. When Rafa offers her the chance to transform her finances by caring for his own son, she has no choice but to say yes, particularly when agents from the National Crime Agency urge her to take the job - and inform on her new boss.

As a reluctant drug dealer and a damaged doctor are pushed together by an increasingly brutal series of events, the question is simple; can either of them survive? And, if so, how?