Review: Witnesses (S2 E1&2/8), Saturday 25th November, BBC Four

NB: SPOILERS INSIDE Witnesses – or Les Témoins in its native French – was a big hit with us when the first series aired here in 2015 on Channel 4. The French series had that classic Nordic Noir feel about it, with plenty of those addictive qualities we lap up year after year – a darker…