This is the man who saw his eldest son walk up a staircase at the end of season one and never be seen again.

Next week, we have to spend the night at my Great Uncle Harold's haunted house in order to claim our inheritance.

I forget, is this from the period where the Fonz became St. Fonz, mentor and guide to troubled teens and single mothers.

Season 7 begins with Tom Bosley saying "Now that Fonzie's been declared King of Norway thanks to winning that contest, we've all got to go to Oslo and bring him this ceremonial viking helmet or he'll be forced to make motorcycles illegal!"

The camera then pans back to reveal that he isn't talking to anyone. After that he's never seen again.