As intelligent as Sherlock Holmes and as wily as Hercule Poirot' Booklist
It is June 1917. DDI Ernest Hardcastle, head of the CID for the Whitehall division of the Metropolitan Police, is called to investigate the murder of a very senior civil servant, Sir Nigel Strang.
Given that Sir Nigel was the permanent secretary at the Ministry of Munitions, Hardcastle wonders whether the German Intelligence Service might be responsible. Then another murder, of a man on a bus near Scotland Yard, leads Hardcastle to a woman working at Woolwich Arsenal who is suspected of passing information to the enemy. But is there a connection? Hardcastle, aided by Detective Sergeant Charles Marriott, must find out . . .
Graham Ison served in the British Army before joining the Metropolitan Police. During his thirty-year career in Scotland Yard's Special Branch, he was involved in several famous espionage cases and spent four years at 10 Downing Street as protection officer to the prime minister. He later guarded US Presidents, crowned heads and other heads of state during state visits to this country. Since leaving the police, he focused his talents on crime fiction, and has written over forty books including the Brock & Poole detective stories and the Hardcastle historical mysteries. He passed away in 2020.