The Doctor receives a distress call from the scariest place in the Universe: a child's bedroom, as the time-travelling drama continues.
Every night George lies awake, terrorised by every fear you can possibly imagine – fears that live in his bedroom cupboard. His parents are getting desperate – George needs a doctor.
Fortunately for George, his desperate pleas for help break through the barriers of all time and space and the Doctor makes a house call. But allaying his fears won't be easy; because George's monsters are real.
The Doctor is played by Matt Smith, George by Jamie Oram, Amy by Karen Gillan and Rory by Arthur Darvill.
7pm, Sep 3 on BBC One/HD
Let's Kill Hitler preview podcast
Series 6, Part 2 promo pics & details
Mark Gatiss in the Series 6, Part 2 trailer?
Series 6, Part 2 trailer breakdown
Series 6, Part 2 Trailer
Guide to Series 6, Part 2
Series 6, Part 2 BBC One trailer