The synopsis for  episode 11, The Lodger, from the BBC Press Office.

There’s a house on Aickman road, and a staircase that people go up, but never down, as the time-travelling drama continues.

To solve the mystery of the man upstairs, the Doctor faces his greatest challenge yet – he must pass himself off as a perfectly normal human being, and share a flat with Craig Owens.

The Doctor is played by Matt Smith, Amy Pond by Karen Gillan and Craig Owens by James Corden. This episode is written by Gareth Roberts.

The Lodger airs on 12th of June at 6.45pm on BBC One/HD.