Orders to Kill (The compelling WWI murder mystery series) - Edward Marston

December, 1917. Ada Hobbes arrives on a frosty morning to clean the house owned by Dr Tindall, a surgeon at the Edmonton Military Hospital. She is shocked to find the blood-covered body of her employer who has been hacked to death.A horrific scene awaits Detective Inspector Harvey Marmion and Sergeant Joe Keedy. Someone clearly enjoyed killing the doctor. Their investigation takes them far out of London and on the trail of a very different Dr Tindall, one who was not the respectable local GP everyone thought he was. Marmion and Keedy will need to sift through a number of likely suspects to find the killer behind this gruesome murder.