"The Markenmore Mystery" by J. S. Fletcher is a detective novel written in the early 20th century. The story centers around the beleaguered Markenmore family, particularly focusing on the complex relationships among Sir Anthony Markenmore, his children Harry and Valencia, and the enigmatic figure of Guy Markenmore, the estranged elder son who re-emerges just before a series of tragic events unfold. The novel hints at secrets, family tensions, and the unsettling atmosphere that surrounds Markenmore Court. The opening of the novel introduces us to Braxfield, the loyal butler of Markenmore Court, as he performs his nightly duties of securing the estate. On this particular evening, he unexpectedly encounters John Harborough, a family friend who has just returned home after a long absence, and learns that Sir Anthony is gravely ill. There's a palpable sense of decay and change in the family dynamic as Harborough and Braxfield discuss the whereabouts of Guy, their estranged elder brother, who has not been seen for seven years. The atmosphere becomes even more charged when Braxfield later receives a familiar knock at the pantry window, which heralds the return of Guy himself—setting the stage for the mysteries, revelations, and dark events that begin to unfold as the family grapples with its past. (This is an automatically generated summary.)