According to Ausiello, "Dr. Hahn will be returning for the Halloween episode on Oct. 25, and she'll make a controversial decision that causes a major rift between Cristina and Izzie. Also, the fallout from Gizziegate will throw Callie and Cristina together in a very unexpected way, and someone is fired from his/her position." He also adds that a new potential love interest has been cast for Derek !! But don't worry : remember what Shonda said : Merder is on !! Oh and Meredith's father returns this month and it won't go smoothly !!! Can't wait for that, especially with Lexi around !
