Following on from Mudtown, The One That Got Away and Keeping Faith, Under Salt Marsh is the latest Welsh crime drama to take its cues from the woolly jumpers and windswept landscapes of Scandi noir. Had its fictional town of Morfa Halen (the Welsh for ‘salt marsh’) been real, then its tourist board would undoubtedly have had cause for complaint. Although very much a slow burner, Under Salt Marsh doesn’t waste any time establishing its ominous tone. Indeed, there’s much more to Under Salt Marsh than its murder. Add Under Salt Marsh to your watchlist on the Radio Times: What to Watch app – download now for daily TV recommendations, features and more.