Before a television program goes off the air for good, its writers must come up with an ending that wraps everything together — and gives dedicated viewers at least some closure on beloved characters and their storylines.

Or a television show can simply get the ax — and what was supposed to be a season finale turns into a series finale.

Show endings almost always divide audiences.

Some are just too vague; some leave too viewers with too many questions; and some simply aren’t good.

That said, here is a look at 15 of the most shocking finales in television history.