The team takes on the case of a dreary middle-aged man who has been experiencing unexplained recurring blackouts and time lapses. With possible diagnoses ranging from a stroke to a concussion to toxins from the consumer products he has been testing for... 

Thirteen brings her one-night stand to the hospital after the woman has a seizure. However, the woman admits she slept with Thirteen just so she could get to House and have him diagnose her condition. Meanwhile, House continues to pay Lucas to spy on...