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The Sherlock star plays a bookshop owner with a penchant for solving crimes. Plus: the devastating story of a sycamore tree. Here’s what to watch this evening8pm, U&AlibiAn atmospheric postwar drama created by and starring Emmy-winning writer Mark Gatiss (The League of Gentleman, Sherlock). He plays enigmatic bookshop owner Gabriel Book, who has a taste for solving crimes – armed with a letter from Winston Churchill that allows him to investigate crime scenes. His first case is a bunch of remains “tossed together like a skeletal salad” at a nearby bomb site, with his bewildered new worker Jack (Connor Finch) in tow. Hollie Richardson Continue reading...