Billed as one of the televisual gems of 2013, Top of the Lake has already been the talk of Sundance and Cannes, but tonight the US/UK co-productions lands on this side of the Atlantic. With the wonderful Elisabeth Moss (of Mad Men fame) involved, it was always going to be decent. Moss stars as Detective Robin Griffin, a specialist in child protection cases who returns to New Zealand to care for her sick mother. While she's there, a 12 year old girl walks into an alpine lake, only to be saved from drowning just in time to discover that she's actually pregnant...