Credit: Bob D'Amico/ABC Photo: Sara Ramirez as Callie Torres in Grey's Anatomy Season 10

Promises, promises: Do they ever mean anything on Grey’s Anatomy? Considering the fact that the doctors of Grey-Sloan Memorial Hospital tend to change their mind more often than they change their scrubs, it’s not likely that any of their decisions are ever set in stone. But that doesn’t mean there aren’t repercussions for breaking those promises!

According to Episode 15’s synopsis, we’re going to see Derek (Patrick Dempsey) break a promise to Callie (Sara Ramirez), and while, so far, we have no idea what that promise could be, we have a strong feeling it has something to do with brain mapping and Derek’s presidential project.

Why? If you remember correctly, the whole brain mapping thing started in the first place because of Callie… but she ended up backing out later on after she and Arizona (Jessica Capshaw) split because she was only trying to help Arizona through the study. As soon as their relationship went kaput, so did Callie’s interest in the project.

In any event, the only promise we can think of at the moment would involve the fact that now that Derek’s brain mapping study is kicking it up a gear. Maybe? Or maybe it’s something else entirely that we’ll discover in the next two episodes.

Either way, there’s one thing we’ve learned: For someone to keep their word around here, they have to write it down on a Post-It.

What do you think the promise is between Derek and Callie? Let us know below!

Source: ABC