Fiona vs Yor Begins

In Spy x Family Episode 21, Fiona, a colleague from Loid’s hospital, is revealed to be the WISE agent Nightfall. Frustrated by delays in Operation Strix, she proposes replacing Yor as Mrs. Forger.
Nightfall suddenly visits the Forger household and comes face to face with Yor, creating immediate tension. Meanwhile, Anya grows attached to her penguin plushie, sleeping with it every night—unaware of the unsettling presence that soon begins to appear.