NBC Not all shows can be hits — and those that aren't usually end up canceled. Sometimes writers aren't given advance notice of their show's cancellation, so the show will simply end on a massive cliffhanger writers meant to explain. For example, "Hannibal" ended with the show's two main characters flinging themselves off a cliff, while "Lois and Clark: The New Adventures of Superman" ended with Lois and Clark receiving a mysterious Kryptonian baby from a time-traveler. Warning: Spoilers ahead for many different TV shows. TV cancellation season is coming to a close.