With London swiftly gaining a reputation as the cocaine capital of Europe, DCI Charlie Knowles and DCI Kate Meredith are under pressure to act and find those responsible for the influx. Of particular interest to them are the Colombian drugs barons, Paolo and Nico, whose cartel is headed by the notorious 'Papa'. A crumbling network of tunnels beneath a row of terraced houses becomes the focus for the storage and distribution of cocaine. David Gibson, having inherited the tunnels, is keen to utilise them in order to avenge the murder of his friend, Will, in Bogota. A plan is hatched involving a warehouse selling antiques as a cover for the tunnel network, but will everything go smoothly and according to plan? A story full of twists and surprises at every turn, it uncovers the seedy world of drug smuggling in the capital.