Cast: Matt Smith, Karen Gillan, Arthur Darvill, Mark Williams, Rupert Graves, Riann Steele, David Bradley, Sunetra Sarkur, David Mitchell, Robert Webb.

Liverpool Sound And Vision Rating ****

Cruelty, genocide and wading knee deep in Ankylosaurus and vicious raptors, just your average job for the Doctor but just that little bit beyond the ordinary for viewers of series seven of Doctor Who.