Big Reveal

It was me the whole time.

The reveal that's supposed to be dramatic, shocking, or, to the audience, heart-breaking. This often involves who the Culprit was in a Whodunit Mystery or series of murders around town, but it can also be on a smaller scale like that one lover in a blooming relationship can't continue to be with their partner because they were secretly in a relationship with someone else the entire time. Since Big Reveal is such a vague UnTrash, it depends on the context of the current or previous situation if it is or isn't called an Eye Roll UnTrash. For example, the disclosure of who the Hero's parents were wouldn't be considered eyeroll worthy, but revealing that somebody the Main Cast thought was a good guy was really a bad guy is often called clichéd by audiences.

Hurtful Big Reveals can result in the termination of relationships and loss of trust after a secret was kept for so long. This can be made worse if the relationship was already in an injured state and the Big Reveal was the Back-Breaking Straw that ruins everything. In an adventurous franchise, if one of the people involved in an ex-relationship has ties to the Good Guys, it could create a potential issue for the leading protagonists as the other person in the relationship was necessary for a Day-Saving Plan. The most logical course of action for the Good Guys is to attempt to Fix The Relationship. Regardless of if they succeed or fail, the people in it will likely have Hurt Hearts to carry with them for the rest of their lives.