HBO continues building out the cast of limited series Big Little Lies, starring Nicole Kidman and Reese Witherspoon, adding Alias alum Merrin Dungey, Larry Sullivan (CSI), and David Monahan (The Dark Knight Rises).

Merrin Dungey 1Big Little Lies will be an adaptation of Liane Moriarty’s 2014 darkly comic novel about three mothers of kindergartners –Celeste (Kidman), Madeline (Witherspoon) and Jane (Shailene Woodley) — whose apparently perfect lives unravel to the point of murder. Jean-Marc Vallée is directing.

Dungey will play Detective Adrienne Quinlan, the lead detective working the murder case. Real-life spouses Sullivan and Monahan will play a married couple and parents of a child at the local elementary school. Iain Armitage also is cast as Ziggy, the son of Jane (Woodley).

Dungey, repped by Gersh, Industry Entertainment and attorney Marcy Morris, recurs on Brooklyn 99 and Chasing Life and is shooting the role of Joy Jackson on CHiPS. Sullivan, repped by BRS/Gage and Main Title Entertainment, recurred on CSI during its entire 12-year run and just wrapped a supporting role on 478 opposite Arnold Schwarzenegger. Monahan, repped by House of Reps and Main Title, is a writer-producer on Disney series Liv And Maddie and recently shot an episode of Bones. Sullivan and Monahan became a YouTube sensation with a Campbell’s soup commercial they did last fall in which they played gay dads with their 3-year-old son.