Helen Edmundson

Mr Whicher is hired by his one-time political master and the man behind Whicher's dismissal from the force, former Home Secretary Sir Edward Shore, to look into threats made against his son Charles, who has recently returned to London from India with his wife and children, only to discover he is being pursued by Lascars (A slang for Indian sailors) in search of some kind of retribution. (wikipedia.org)

Whicher is engaged by Sir Henry Coverley, who suspects his wife Jane of infidelity and his sleuthing leads to his talking to the Coverley groom Josh and his wife Ruth, the village post mistress. Eventually he seeks out Jane's lover Matthew Thorogood, who insists that he genuinely loves her. However he is nowhere to be seen when the divorce case comes to court and he is later found dead. (imdb)

A mysterious Inspector investigates the wealthy Birling family and their dinner guests following the suicide of a young woman. (imdb)

The story of Mary Magdalene.

In the early days of criminal investigation, before guilt and innocence were determined by forensic science, there was a detective, "a man of mystery", with an uncanny ability to read the human character and an unswerving instinct for the truth. In Victorian England, justice depended on The Suspicions of Mr Whicher. (amazon.com)