Witnesses (S2 E3&4/8), Saturday 2nd December, BBC Four

NB: SPOILERS INSIDE Last week’s opening two episodes of the second series of French crime drama, Witnesses, fell straight back into place and gave us pretty much everything we loved about the first series: a terrifyingly grotesque tableaux, a case that was commenting in some way about social and biological constructs, and an intriguing¬†relationship between…