casting jack cassidy ken frankin sheer brilliance cassidy personified arrogance confidence charm wit  condescending evil little smirk face opinion jack cassidy far best murderer having appeared three times columbo series particular and first performance favorite columbo episode ever  hands down fresh faced steven spielberg amazing camera work yes couple camera shadows actors timescapturing nuances banter different intriguing angles columbo franklin also panoramic tight shots big bear lake ca franklins cabin home impressivebr br if yet seen episode owe  true masterpiecebr br jack cassidy talented actor singer charismatic personality highly infectious death  age  sad indeed tragic  surely best years ahead him rest peace jack live eternity great work