A man is the sum of his memories. A Time Lord even more so. Behind The Sofa is a collection of over 100 celebrity memories of Doctor Who, compiled in aid of Alzheimer's Research UK. Steve Berry decided to undertake this project in memory of his mother Janet, who suffered from Alzheimer's in her final years and passed away in 2009. All of the book royalties, proceeds and net profit will be donated to Alzheimer's Research UK. Contributors include Neil Gaiman, Jonathan Ross, Jenny Colgan, and Charlie Brooker.