Who is back?
First up, there's Madeline Martha Mackenzie, played by Reese Witherspoon, married to limp noodle Ed (Adam Scott). Interests include: Her grudges, Avenue Q, and, as of Season 2, real estate. She has two children, Chloe (Darby Camp), who is preternaturally interested in Leon Bridges, and Abigail (Kathryn Newton), a teen who once tried to sell her virginity for charity on the Internet. Abigail is Madeline's daughter with her ex-husband Nathan (James Tupper), who is now married to…
Bonnie Carlson (Zoe Kravitz). Bonnie probably gets the least screen time of any of the women in Season 1, and is largely framed as an open-minded hippie, who does yoga and listens to Sade. She and Nathan have a daughter, Skye (Chloe Coleman). Of course, her biggest contribution to the narrative so far is delivering the blow that pushes Perry to his death. The new episodes spend more time with Bonnie, delving into her past. (In Moriarty's book, readers learn that she came from an abusive household, prompting her rage.)
Nicole Kidman is Celeste Wright, a former lawyer who retired to raise her twins (Cameron and Nicholas Crovetti) with Perry. Much of the first season finds Celeste, coming to understand the nature of her abusive relationship alongside her therapist (Robin Weigert).
Perry also links Celeste to Shailene Woodley's Jane, a new arrival to Monterey at the beginning of the first season and single mother to the precocious Ziggy (Iain Armitage) without the means of her peers. In the first seven episodes, she's haunted by the spectre of the rape that resulted in her pregnancy. When Perry approaches Celeste on Trivia Night, she realizes that he was the perpetrator.
Early on, Jane is at odds with Laura Dern's bombastic Renata Klein, who accuses Ziggy of hurting her daughter Amabella (Ivy George). Renata's a cutthroat tech honcho, who is ostentatiously wealthy and not afraid to let everyone know. She's married to a classic douchebag Gordon (Jeffrey Nordling).
That's the main bunch, but there are a couple of other people you might want to remember. Among them: Tori (Sarah Sokolovic), the wife of the local theater director Joseph (Santiago Cabrera), with whom Madeline had an affair. There's also P.J. Byrne as the exhausted Principal Nipple, and Merrin Dungey as Detective Adrienne Quinlan, who is not at all buying what the Monterey Five are selling when it comes to their tale about Perry's death.