Unraveled Knots, by Baroness Orczy, author of the Scarlet Pimpernel series, contains thirteen short stories about the Old Man in the Corner, Orzy's armchair detective who solves crimes for his entertainment. In these first-person narratives, a woman, presumably the Polly Burton of The Old Man in the Corner, visits a tea house after an absence of twenty years to find the Man in the Corner just as she had last seen him years before, fidgeting with his string and with mysteries to unravel.
