OK. So, here's the deal. The night Ali disappeared, she saw Spencer argue with Ali, and she saw Spencer with a shovel. As we've heard from Ali, that fight came to nothing, but Melissa didn't know that.
A bit later, she came upon an apparently dead body. It was a blonde, dressed in Ali's outfit. Melissa was convinced Spencer had killed Ali, and in a desperate attempt to protect her sister, Melissa rolled the body into the open grave (which we know is from Ali was originally buried) and covered her up. She never saw the face.
Melissa thought she'd buried a dead Ali to protect her little sis. But now she knows it was Bethany Young, someone she'd never met, and she knows Bethany was actually alive (barely), since the autopsy shows she was buried alive. She's clearly distraught by this horrible act.
Well. That explains a lot of Melissa's strange behaviors over the years. However, it doesn't really tell us much about what happened to Bethany, or why. Yes, Melissa technically killed her, but who knocked her out, and why? Did the person who knocked her out mean to kill her and just fail, or was she supposed to recover until Melissa interfered? Why was she dressed like Ali? What is her connection to any of this?
Check out the confession here.
Are you happy with what we learned, or do you think it's just more questions? Sound off in the comments below!
Catch the next episode of Pretty Little Liars Season 5 on Tuesday, August 26, 2014 at 8 p.m. ET/PT on ABC Family.