Mr. And Mrs. Clause have a naughty by-nature list of names. They meet personally with those on the list and send them away to their finality. Feds and police try to make a link between the events and seem like they are always several steps behind.
Nothing extraordinary happens in this sluggish slasher. As far as I could tell, not even one person or police fired a round to end Mr. & Mrs. Clauses' affairs.
In the slasher horror movie types, there are usually expectedly unexpected scenes where the element of surprise gives an advantage to the culprits whilst slashing their victims. However, it's not the case here, except for the second victim. With the cutlery in their hands, they talk and bore the victims to death.
Consequently, it is hard to buy into the story. It's just not believable.