The Poisoned Pen

In 1942, dead bodies were a common sight after an air raid, so no one was suspicious when a mutilated body of a young woman was found in a bombed-out warehouse. She was just another victim of a war that had claimed thousands of victims. At least that was what Sergeant Timothy Tipping assumed, yet his boss Inspector Ben Bishop was suspicious. Her shoes were missing, and so was her purse. It was the same modus operandi as the other bodies.
Surely it wasn't murder? Yet as the investigation progressed, it was plain that inspector Bishop had a killer on his patch and the local doctor, Brian Dwyer, became his number one suspect. Even his brother John Dwyer, the Catholic Priest of St Joseph's Church, believed in his brother's guilt. Especially after both of Brian Dwyer's wives died in suspicious circumstances.
Was Brian Dwyer guilty? Inspector Bishop thought so, and he was working hard to prove it, and to send Brian Dwyer to the gallows.
There was only one person who could save him. Only one person who knew the truth. Yet in telling that truth, Ellen Cooper, a complete stranger, put her own life in mortal danger.