It is the nature of mysteries that people want to find answers, and since fiction is in the business of giving people what they want, just about any mystery introduced in a story is going to be resolved. Important character gets murdered? We're gonna find out who the culprit was. The Eiffel Tower disappears? We're gonna find out where it went and why. Someone blacks out and wakes up three days later wearing antique samurai armor and a pink cowboy hat? We're gonna find out what led them to that state of affairs. While mysteries might sometimes be left unanswered inadvertently (such as a series being abruptly canceled, or the writers simply forgetting the mystery exists), if the people in charge know what they're doing, for every mystery introduced there's going to be an answer introduced so