A Romantic Mystery with the Emphasis on "Romantic"

'K'.
By Mary Roberts Rinehart (1876-1958).
Houghton Mifflin.
1915. 410 pages. $1.35
Online HERE, HERE, HERE, and HERE.

This one seems to be much more of a romance than a mystery, a mainstream novel with dollops of intrigue. Excerpts from two contradictory contemporary reviews:

. . . Oddly enough, the weakest part of the story is in the management of the plot, which at times seems almost forgotten.  . . . — "The New Books," THE OUTLOOK (August 11, 1915)

[SPOILERS in review] . . . The author has shown unusual cleverness in weaving the plot consistently among so many characters.  . . . — "Three Recent Novels," THE LITERARY DIGEST (September 11, 1915)

Resources:
- Filmed several times, first as The Doctor and the Woman (1918); K - The Unknown (1924; review HERE); and (although this can be disputed) The Unknown (1927).
- Our last glimpse of Rinehart was HERE.

Category: Detective fiction