The earliest reviews have not been kind. This tying together of “Unbreakable” and “Split” into a trilogy, with McAvoy, Willis and the Laurence Olivier of his Age, Samuel L. (As in, “Anything for a buck, at this stage.”) here to do the heavy lifting.

My own valuation will be based not on the back-engineering it took to get these films to fit together, but on “Glass” as a stand-alone tale — with Willis leading the hunt for the escaped multi-personality psychopath played by McAvoy — and the performances.

“Glass” opens Friday.