The Time Of Angels - episode synopsis

The BBC have released the synopsis for the fourth episode of the new series of Doctor Who, The Time Of Angels. See what they have to say below:

Don't blink – the Weeping Angels return in the fourth episode of Doctor Who, which is written by Steven Moffat.

The Doctor, played by Matt Smith, is recruited by Father Octavian to track the last of the Angels through the terrifying Maze Of The Dead.

Meanwhile, the mysterious River Song re-enters the Doctor's life – but can he trust her?

Father Octavian is played by Iain Glen and River Song by Alex Kingston. The Doctor's companion, Amy Pond, is played by Karen Gillan.