[s12e23] At Last -

: Meredith decides to sell the house Derek built (the "Dream House") to Callie and Penny, as she feels she is finally ready to move on from that chapter of her life. Major Character Developments Development Meredith Grey

It establishes as the primary event.

Officially begins her first post-Derek "tryst" with Nathan Riggs. [S12E23] At Last

Her refusal to marry Alex sets the stage for the reveal of her "Paul Stadler" backstory.

Explain the and why his arrival was so controversial. : Meredith decides to sell the house Derek

It creates a dynamic, as Maggie reveals to Meredith that she also has feelings for Riggs, unaware that Meredith just hooked up with him.

The episode centers on several couples reaching critical turning points. After a season of "will they/won't they" and professional tension, Meredith finally gives in to her attraction to Nathan Riggs. Meanwhile, Owen and Amelia take a massive leap in their relationship, while Jo and Alex hit a definitive wall regarding their future. Her refusal to marry Alex sets the stage

is the 23rd and penultimate episode of the 12th season of Grey's Anatomy . It primarily focuses on the shifting romantic dynamics at Grey Sloan Memorial, the culmination of Amelia and Owen’s relationship, and a major romantic breakthrough for Meredith. Episode Summary