The “Broad Squad” is growing.

“Six Feet Under” alumna Lauren Ambrose has been cast as the final lead in ABC’s cop drama pilot. The news comes on the heels of “True Blood” star Rutina Wesley joining the show.

Ambrose will star as Eileen, one of the first four women to graduate from Boston’s Police Academy in 1978. The rookie cop struggles with balancing her new career with her roles at home as a wife to a wounded police officer and a mom to a young son.

The drama, inspired by true stories, also stars Charlotte Spencer and Cody Horn (“The Office”) as the two other female leads, as well as Michael Gaston (“The Mentalist”), Kenneth Mitchell (“Jericho”) and Alberto Frezza.

Ambrose made her debut on USA Network’s miniseries “Dig” this Thursday.

“Broad Squad” is penned by “CSI: NY’s” Bess Wohl and exec-produced by Josh Schwartz, Stephanie Savage, Len Goldstein and Aaron Kaplan.