Plus: Cam will finally get married!

As of Thursdaysgame-changing season finale, Zack Addy (Eric Millegan) is back onBones.

So how are his former coworkers going to handle Zacks possible turn to the dark side?

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Theres a rainbow of emotions, star Emily Deschanel tells EW.

Im the orange, jokes costar David Boreanaz.

Peterson promises Zack will appear in probably about three to four episodes of the season.

You got what you wished for, Peterson says to the fans who were calling for Zacks return.

Maybe not the way you wanted it.

Maybe someone gets killed at the wedding, he suggests.

Check out the video above.

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