Neil Hilton

 had a traumatic experience as a child. He and his friends used a ouija board, during which one of his friends, Andrew, became so scared that he ran out of the building and was hit by a car, killing him.

Decades later, Neil and several of his co-workers used a ouija board. Neil became so scared that he ran out of the building. He was stopped by the Seventh Doctor and invited to time travel with him; when his travels were over, he was brought back to the time of the séance. (PROSE: Séance, or Smoking is Highly Addictive, Don't Start)