The Eleventh Doctor first appears in the final scene of "The End of Time" (2010) when his previous incarnation regenerates. Smith debuts fully in "The Eleventh Hour", where he first meets Amy Pond (Karen Gillan) as a child while investigating a mysterious crack in her wall. Many years later, Amy joins the Doctor as his travelling companion on the eve of her marriage to Rory Williams (Arthur Darvill). In "Victory of the Daleks", he is tricked into spawning a new generation of Daleks. In the two-part story "The Time of Angels" and "Flesh and Stone", he re-encounters future companion River Song (Alex Kingston) and his enemies the Weeping Angels and learns that cracks like the one in Amy's wall are erasing individuals entirely from time and space. After Amy attempts to seduce the Doctor, the Doctor recruits Rory as a second companion from "The Vampires of Venice" up until "Cold Blood", where he is killed protecting the Doctor and is erased from history. The Doctor also confronts his dark side in "Amy's Choice", where he is put through trials by a manifestation of his self-loathing, the Dream Lord (Toby Jones). In the final episodes "The Pandorica Opens" and "The Big Bang", an unknown force makes the TARDIS explode, causing the universe to collapse in on itself. Though he closes the cracks —reversing their effects and preventing the explosion— the Doctor himself is erased from history. River assists Amy in remembering the Doctor back into existence; he returns at her wedding to Rory, and the couple rejoin him as his companions. He next appears later in "Death of the Doctor", a two-part story of spin-off series "The Sarah Jane Adventures", alongside former companions Sarah Jane Smith (Elisabeth Sladen) and Jo Grant (Katy Manning), while Amy and Rory are on honeymoon.