It’s morning in Covent Garden. A woman is shot dead in the street. In the distance, a child screams as a car disappears with a screech of tires. It is a crime that will spark a series of intense events in London and the most notorious gangs are implicated. Mark Hammond is about to be dragged into a life he vowed he’d left forever. DC Frank Carter is caught on the wrong side of London's criminal underworld. Two men separated by the law but joined in their obsession to bring down London’s crime supremo.