He never imagines he would encounter anyone whose intellect matched his own, much less an audacious teenage girl with a penchant for detection. Miss Mary Russell becomes Holmes's pupil and quickly hones her talent for deduction, disguises and danger. But when an elusive villain enters the picture, their partnership is put to a real test.

    But this year Eleanor would be there—Eleanor, whom he had not seen in seven years, ever since she’d married Cosmo Rayne.There are mysteries concerning the late Mr. Rayne, and his lovely widow—but then David has secrets of his own. When a black clad figure crosses the line between shadow and moonlight the game is afoot in one of Patricia Wentworth’s most eerie and thrilling stories.Will o’ the Wisp was originally published in 1928. This new edition features an introduction by crime fiction historian Curtis Evans.“When I pick up a book by Patricia Wentworth I think, now to enjoy myself—and I always do.” Mary Dell, Daily Mirror