Dr. Knell is a fictional character portrayed by Marcelo Tubert in the TV series Home Improvement.
They appear in 1 episodes out of a total of 203 aired
Episodes1
Insult to Injury
episode S6.E21 april 1997Tim separates his shoulder and needs an operation the day before an award-winning show where he could drive a steamroller, and two days before a trip with Mark to see the Blue Angels. He escapes from the hospital, and causes further injury.