in itself
Without the consideration of anything else. (A shortening of the full phrase "in and of itself.") The defendant's story seems plausible in itself, but when taken alongside the testimony of the witnesses, it starts to look less and less believable. As a sequel, the movie does a good job of continuing the story of the first, but it fails as a cohesive, enjoyable film in itself.
in itself
see under in and of itself.
in itˈself
considered separately from other things; in its true nature: In itself, it’s not a difficult problem to solve.