As a Thief in the Night

As a Thief in the Night is a 1928 detective novel by R. Austin Freeman, featuring the forensic investigator Doctor Thorndyke. The plot revolves around the suspicious death of Harold Monkhouse, who is found dead from arsenic poisoning, prompting his brother Amos to seek a second medical opinion. The ensuing inquest reveals secrets among the household members and raises questions about potential foul play, particularly focusing on Harold's wife, Barbara. This novel is notable for its intricate plot and exploration of medical and forensic themes in early 20th-century crime fiction.