Nigel Marlin Balchin was an English psychologist and author, particularly known for his novels written during and immediately after World War II: Darkness Falls from the Air, The Small Back Room and Mine Own Executioner.
Excerpt from Wikipedia, available under CC BY-SA 4.0.

In the Absence of Mrs Petersen
1973
ISBN 9780855948641
The Small Back Room
2001
ISBN 9780304356942
Darkness Falls From the Air
2002
ISBN 9780304359691