Mark Allmore was a very unusual clinic patient in the Season 4 episode 97 Seconds. He was portrayed by actor Charlie Hofheimer. Mark came to the clinic and was seen by Gregory House. Dr. House noted that Mark was in a neck brace as well as having a cast on both one arm and one leg. As Dr. House approached Mark to find out what his complaint was, Mark pulled out a knife. Dr. House backed off and tried to molify Mark, but to his astonishment, Mark stuck the knife into a nearby electrical outlet, electrocuting himself and inducing cardiac arrest. More curious than anything else, Dr. House called a code blue and waited for emergency personnel to arrive. He then left the examination room.