 The episode features alien time traveller the Doctor ( Matt Smith ) and his companions Amy Pond ( Karen Gillan ) and Rory Williams ( Arthur Darvill ) accompanied by Rory 's father Brian ( Mark Williams ) , Queen Nefertiti ( Riann Steele ) , and John Riddell , a British big @-@ game hunter ( Rupert Graves ) . The group lands on a large spaceship that contains dinosaurs and discover that it is a Silurian ark , though the Silurians have been murdered by Solomon ( David Bradley ) , a black market trader who is intent on finding something of value . 
