Viewers were treated to a family reunion on Grey's Anatomy Season 11 Episode 6, as April's mother stopped by and got along very well with Jackson.

The same, however, won't be said next Thursday night between a different set of relatives.

As teased in the following promo for Grey's Anatomy Season 11 Episode 7 ("Can We Start Again, Please?), Derek and Amelia Shepherd won't exactly be on the same professional page in a few days...

Elsewhere on the upcoming installment:

• Bailey will oversee Jo’s first solo surgery.
• Arizona will be tasked with making an executive decision in Dr. Herman’s absence.
• The doctors will spring into action when a couple arrives at the emergency room after escaping a fire.

12 Truly Terrible Grey's Anatomy Tragedies

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Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.