GREEN FOR DANGER (BRITISH LIBRARY CRIME CLASSICS) (PB)

In the British Library Crime Classics series this mystery is by Christianna Brand, the pseudonym of Mary Christianna Milne, a British crime writer best known for her novels featuring series detective Inspector Cockrill. It is 1942 and postman Higgins is delivering seven letters of application to the new military hospital in Heron’s Park, Kent and a year later, his inexplicable death from asphyxiation at the operating table at the same hospital casts four nurses and three doctors under suspicion. Inspector Cockrill is called in to determine who committed the foul deeds, and how it was possible to kill with no evidence left behind.