The Stranger. A complete stranger wanders up to a happily married husband and father and explodes a bomb in the form of a secret his wife has been keeping from him. And when she then disappears, the husband then finds the layers of deception keep unfolding. Pretty good mystery series based on a book, halfway through it, good cast including Richard Armitage from Spooks, Dervla Kirwan and Anthiny Head (looking bloody old
).