Character mistake: When Columbo is in Mr Benedict's house with Mr Benedict, he calculates the cost of Mr Benedict's house at $720,000. A moment later Mr Benedict asks Columbo; "How did you arrive with that figure, $750,000?" (00:43:20)
Other mistake: In the opening of this first series dedicated to Lupin, Fujiko Mine is riding a motorbike with the poorly romanized brand "RUPIN III"