A powerful technique called reverse outlining will help ferret them out. A reverse outline will also help you track character arcs and/or rein in wandering POV dilemmas.
Reverse outlining—basically a list plus some first-grade arithmetic—can also bail you out of glitches and blocks, aka those dreaded now-what-happens? moments.
Oh the horror. You wrote and wrote... and now you're left with WHAT?
Don't be frightened. You've got your raw material, and you can fix it.