Bookish is a decent watch on U&Alibi (who the fuck came up with that channel name?). Six hour long episodes but each story is 2 episodes.
Obviously Sherlock vibes given its not set in present day, post-war in this case, and is written by Mark Gatiss, who also plays the lead role. A good cast and some 'name' guest stars.
Not up there with Sherlock, which is a big ask, but enjoyable enough. Already renewed for a second series.
And I am a sucker for a good title sequence.