'...was enough to send you to sleep.' Read on for the critics' full verdict on last night's TV.

Horizon, The Secret Life of Your Body Clock, BBC2
"Horizon's investigation of our body clocks was enough to send you to sleep."
Lucy Mangan, The Guardian

Mistresses, BBC1
"Bobbing along as bouyantly as ever"
Lucy Mangan, The Guardian

True Stories: Trouble the Water, More 4
"The first half of this Oscar-nominated documentary was grimly compelling, but unfortunately, once professional directors Tia Lessin and Carl Deal took over it became an overlong, meandering bore."
Paul Whitelaw, The Scotsman

Eastenders, BBC1
"Viewers of EastEnders were treated last night to a unique storyline that involved a detailed and occasionally moving discussion of racist bigotry in Fifties Britain."
Tim Teeman, The Times