Credit: Video Still

As we know, Grey's Anatomy Season 9, Episode 2: “Remember the Time” (airing October 4) is going to be a flashback episode to the period of time immediately following the plane crash. In this sneak peek, Callie (Sara Ramirez) studies Derek’s (Patrick Dempsey) injured hand, suggesting a much riskier surgery that could result in nerve damage. When Derek says that she should do the surgery, she’s grateful and excited.

While we don’t know for sure if she does perform Derek’s surgery, if she does, that means that Arizona’s (Jessica Capshaw) amputated leg and Derek’s non-functioning hand might both be blamed on Callie. How could she survive the weight of all that guilt?

Watch the sneak peek below and tell us what you think!

Credit: ABC Photo: Preview Clip of Grey’s Anatomy Season 9, Episode 2: Derek Opts For “Riskier” Surgery (VIDEO)

Catch the next new episode of Grey’s Anatomy on Thursday, October 4 at 10 p.m. ET/PT on ABC.

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