If he’s lucky, there are two or three times a year when the television critic’s job is just too easy. For example: You should do everything you can to watch the exceptionally striking British miniseries “Broadchurch,” which was a big hit over there earlier this year and makes its debut here on BBC America on Wednesday night. It’s among the best detective shows — and perhaps even among the best dramas — in several years. It will break your heart and keep you guessing all the way through.
It’s tempting now to hit send and call it a day.
That’s because “Broadchurch” is one of those shows that seems, at first, nearly immune to prolonged conversations about its theme or intent. It also hides its tiny shortcomings rather well. The only real question it triggers for its viewers happens to be an eternal favorite: Whodunit? (I promise not to tell. The Internet, however, clearly made no such promise, so surf cautiously.)