Doctor Who Series 5 episode 4 ''The Time of Angels.''
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.
Doctor Who is simulcast on the BBC HD channel – the BBC's High Definition channel, available through Freesat, Sky and Virgin Media. [BBC Press Office]
''The Time of Angels'' will air April 24th on BBC ONE and BBC HD at 6:25pm