That letter is silent, as in Harlot.
There was another old movie, “Champagne for Caesar.” It was about a brainiac who tried to bankrupt the sponsor of a quiz show. He winds up playing for $40 million or nothing, which is the value of the sponsor’s company.
The final question is the topic of the quote which the brainiac gets wrong. It was made in the days before computers were widely available.
Ronald Colman played the brainiac, “Beauregard Bottomley”
Vincent Price was the villain (the head of the sponsoring company). I don’t remember who played Flame = female who spies against Bottomley but eventually falls in love with him.
Did you mean Merlot?