I've got the theme (mystery writers and their main characters) but I'm still struggling with some answers, for instance20d, Leaves alone, having you to follow: l?t? b? - Lets by perhaps? 7d 4 to order one tripe: ?o?r?t (4d is Sherlock). And I really need 25d for another answer, A retreat into port, 4 letters. Deeply grateful for any assistance.