I was bereft after finishing the Serailler series too. Have you tried Kate Atkinson's Jackson Brodie novels? I read the first one, quite liked it, but haven't read the others yet. Or P D James? Just trying to think back to what was recommended to me when I asked about similar novels a while ago.
There's a trilogy set on the island of Lewis - I've got those on my list. Can't think of the author's name, but The Black House, The Lewis Man and Chessmen I think are the titles. There's another series set on Shetland. I'm hopeless with remembering authors' names, though 
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Eeny Meeny by M J Arlidge starts a series set in Southampton, and a female police officer. That was good. I think there's four or five of them now. I've got those on my to read list.
If you like police procedural with a twist of fantasy added, then I'd recommend Ben Aaronovitch's novel Rivers of London and the rest of the series. Great fun, lots of humour. Very readable.
Nicci French is another author (actually a writing team of two under one name) who produce good novels. You might like to give one them a go?
Janet Evanovich's Stephanie Plum series is good. Or at least the earlier novels are, the later ones have become rather formulaic and bit tired. But I like them still. She's a bounty hunter, the novels are set in Trenton, New Jersey. Lots of humour as well.