Ferguson, John - The Man in the Dark (1928)

The Man in the Dark is a mixture of detective story and thriller with his serial detective Francis MacNab. It's quite good, though the end is a bit too happy.

The following summary of the mystery is from the Penguin edition of 1952:

"Murder on a foggy night at Ealing in the presence of a down-and-out who couldn't see the crime; a long car drive taking two people to hide for a while in the country; pursuit by journalists; a blind man's love affair; the criminal's escape finally and dramatically prevented. These are the ingredients of a part-mystery, part- adventure story which describes with equal brilliance and from both angles the problems of the hounds and the dodges of the hares."

Juergen Lull.

See also http://apenguinaweek.blogspot.com/2011/12/penguin-no-65-man-in-dark-ealing.html