Adam Scott is expanding his relationship with HBO.

The Parks and Recreation alum has been tapped to co-star in limited series Big Little Lies, The Hollywood Reporter has learned.

From David E. Kelley, the comedic drama centers on three mothers (Reese Witherspoon, Nicole Kidman and Shailene Woodley) of kindergartners whose apparently perfect lives unravel to the point of murder. Scott will play Ed Mackenzie, the stable and loving husband to Madeline (Witherspoon) whose approach is to play it safe.

Based on Liane Moriarty's book of the same name, the drama hails from David E. Kelley (Boston Legal, Ally McBeal) who is writing the limited series. HBO landed the project in May following a bidding war with Netflix.

Kidman and her Blossom Films banner, as well as Withersppon and her Pacific Standard shingle, optioned the rights to the twisty thriller/soap and No. 1 New York Times best-seller, which was published in July, as a potential feature film before refocusing the drama for television.

Kelley, who most recently served as showrunner on CBS' Robin Williams-Sarah Michelle Gellar comedy The Crazy Ones, is attached to pen the series via his David E. Kelley Productions banner. Kidman and Witherspoon will both exec produce alongside Kelley. Exec producers include Kelley, Witherspoon and Pacific Standard's Bruna Papandrea, Kidman and Blossom Films' Per Saari. Australian novelist Moriarty will serve as a producer on Big Little Lies. She previously penned best-sellers What Alice Forgot, Three Wishes, The Hypnotist's Love Story and The Husband's Secret.

Big Little Lies expands Scott's relationship with HBO, where the actor-producer and his wife, Naomi, set up comedy Deep S.I.X. via their Universal Television-based Gettin' Rad production company.

The HBO comedy marked the latest sale for Gettin' Rad, which also is prepping Donuthead and Buds for NBC. The company also is behind indie feature The Overnight, which bowed in the summer. They're in post on their second feature, Other People, which will open at Sundance. On the acting side, Scott stars in Universal and Legendary's Krampus and wrapped production on My Blind Brother. Scott is repped by WME, Rise Management and attorney Wendy Heller.