I couldn't stop laughing when I saw this film. It's pure gold.
What really got me rolling in the isles was the fact that Isolde (the Mormon missionary) basically dresses and acts like Dracula. And then when Isolde starts using his "mesmeric powers" to charm the lady into becoming one of his wives... wow... that was awesome... that was totally Dracula.
I'm a Mormon, where are my mesmeric powers??? That would have made dating a lot less complicated.
your church's answer would probably be in say Alma 17.
The other answer is a lot more jaded, but you did ask where your mesmeric powers right?
missionary work however dressed up, is door-to-door sales. It's tactics and techniques are in fact identical. You gain trust, you offer a product to solve a 'problem' that the person either didn't know they had, or just discovered that you had the solution for.
Then unlike reputable sales forces, Mormonism insists that it's clients join it's sales force to continue it's work. Just like cut-co and all those weird, weird creepy people who also happen to knock on your door and ask personal questions without you having asked them to come over. They even both play the game of, HEY! THIS IS GREAT! LETS SELL IT TOO ALL YOUR FRIENDS AND FAMILY!!!
Most friends and family when trying to be sold amazing knives and amazing religions, that they didn't know they needed, participate, to a point, and then move on. Which basically gets me to the other point. The movie is of course exaggerated and hyperbole. Mormons are vampires but don't have magic powers.
If they really were able to mesmerize people they would have better than 25%-50% retention rate on their converts. Personally I feel much more at ease with my 'converting' some 32 souls to Mormonism knowing in my mission, it leaned to about 20% making me only personally responsible for leading astray about 5-8 people for the rest of their lives.