The team takes up the case of a homeless man who was accidentally burned by a miniature rocket launched by two boys in a local park.
Confronted by Wilson, House reveals that he is marrying her so she can get her green card; in exchange, she will take care of his specific needs.
One test reveals 13 bone fragments in his colon, which he says are the result of eating leftovers given to him by a cook at an Italian restaurant.
House eventually determines that the patient has been eating a primarily vegetarian diet at the hospital, which in conjunction with Refsum disease has been causing his symptoms.
A DNA sample sent to the lab led to the patient being identified as a cannibalistic serial killer who is wanted in 10 states for a string of 13 murders which leaves Masters completely stunned.