Review: Vera (S6 E1/4), Sunday 31st January, ITV

Vera, TV’s tattiest detective (post-Columbo) returned for a sixth outing last night, her grimy old raincoat bustling like sails in the brisk, forlorn Northumbrian winds, and still chiding her young colleagues with that unsettling voice that sounds by turns like black treacle slipping off a spoon to the shrillness of iron nails scraping down a…