Principal Protection Officer David Budd has made a major breakthrough in the investigation into the attack on the home secretary, but his enquiries have put him in mortal danger. With…

Traumatised by the events of the last 24 hours, PS David Budd falls under suspicion. Pushed to breaking point, David is helped back on his feet by his estranged wife,…

Determined to push the investigation forward, PS David Budd targets enemies of home secretary Julia Montague. As he delves into Julia’s political manoeuvring before the attack, David’s theories about a…