In the Season 1 finale, Celeste makes a bold move after another fight; Madeline deals with fallout from her past before the school's fall fund-raiser; and Jane learns who's really been hurting Amabella at school.

Madeline worries about the can of worms she's opened for Jane. Jane confronts Renata. Bonnie tells Nathan about a secret project Abigail has been working on. Meanwhile, Ed and Madeline have a frank conversation about the lack of passion in their marriage.

Madeline receives encouraging news about the play from her director, Joseph Bachman, but is left concerned by his newly icy demeanor. Principal Nippal and Ms. Barnes share their conclusions about Ziggy and Amabella with Jane. Celeste has a solo session with Dr. Reisma, who tries to get to the bottom of her relationship with Perry.

Nathan invites Madeline and Ed to a couples' dinner to discuss a "parenting paradigm" for Abigail. Celeste prepares for a city-council meeting about Madeline's play, and bristles at Perry's concerns about her returning to work. Jane meets with Ms. Barnes, Ziggy's teacher, who suggests her son be medically evaluated in light of further evidence of classroom bullying. While Madeline is confronted by a skeleton from her past, her internet sleuthing reveals a key player from Jane's past instead.

Hoping to get under Renata's skin, Madeline organizes a trip to compete with Amabella's birthday party. After another argument, Celeste succumbs to Perry's charms before their first session with Dr. Amanda Reisman, a therapist. Madeline gets called for a meeting with Abigail's guidance counselor. Principal Nippal announces the theme for the Fall Gala Fundraiser. Later, Jane seeks Madeline's help with Ziggy's family tree project, and opens up about her past.

Jane deflects Ziggy's questions about why they moved; Madeline is outraged over a slight from Renata; Celeste suggests that she and Perry should see a counselor; Nathan and Ed meet in hopes of smoothing out tensions between their wives.

In an affluent community, a suspicious death at an elementary school fundraiser draws attention to the friction amongst some of the mothers; Madeline and Celeste welcome Jane into their inner circle; battle lines are drawn after an incident.