Tom (Corner of the Eye)

Tom was an agoraphobic man living in England during the 21st century. He was stalked by a Floof, who commonly caused mischief in his house, moving objects and hiding things. His wife, Kathy, was killed by the Floof, who hid the body in the basement. After Tom met the Tenth Doctor, he was told about the Floof and what it had done to his wife. The Floof had manipulated him into thinking that he spoke to her every day on instant messenger, when in fact it was an AI program. An AI of Tom was created to keep Kathy's AI company, and Tom left the house. (DWS: Corner of the Eye)