A number of internationally successful mystery series are now available in America on DVD. The Bridge features an unusual pair of detectives from different countries forced to cooperate when a dead body is found on a bridge connecting Sweden and Denmark, while Broadchurch spends multiple episodes on the efforts of English detectives to solve a murder in a small English town. Top of the Lake, directed by Jane Campion and starring Elisabeth Moss, is set in rural New Zealand, while Spiral reveals a side of Paris few tourists see or wish to see. The Fall, set in Belfast, stars Gillian Anderson, while Hinterland is a BBC series filmed in the valleys of Wales. Two good series are set in the 1950s; The Bletchley Circle, in which several women who worked as wartime codebreakers unofficially investigate unsolved cases, and The Hour, centering on early television journalists in the UK.
You can find additional suggestions in this posting as well.