Katherine Heigl is packing up her "Suits" to move to "Firefly Lane."

The "Grey's Anatomy" alum will star in and executive produce Netflix's 10-episode adaptation of Kristin Hannah's bestselling novel. Maggie Friedman ("Witches of East End") will serve as showrunner.

"Firefly Lane" centers on two inseparable best friends and their enduring, complicated bond, spanning four tumultuous decades.

Heigl, who is wrapping up a two-season run on USA's "Suits," will play Tully Hart, a magnetic, ambitious, reckless and fiercely loyal force of nature.

According to the official logline, Tully is still bearing the scars of a traumatic childhood and dogged by inner loneliness, even as she goes on to fabulous fame and fortune as a journalist and talk show host. Her saving grace is her best friend and soulmate, Kate (still uncast), with whom she shares an unshakable bond, over the course of four tumultuous decades.