The Hangman's Knot
by Arthur Gask (1936)
Arthur Cecil Gask (1872-1951) was born in London and practised as a dental surgeon for more than forty years in England and Australia. Following retirement in 1933 he devoted himself to writing. He died in North Adelaide, South Australia.
Gilbert Larose is again called from retirement to solve a mystery—if anything, a mystery more baffling than those which have made his name in the past. Six murders in seven weeks and Scotland Yard is helpless. The crimes give no clue—not even a similarity of method to connect them. Just the whine of a bullet, the stab of a knife or the crash of a bludgeon, and the murderer has slunk back into the blackness of the night. Six times in seven weeks a coroner's jury returns the verdict “Murder by some person or persons unknown.”