The 10-episode first season will debut on Sunday, June 23 on AMC, AMC+ and BBC America.
Set in the near future, a group of women weave their way into each other's lives and embark on a thrilling journey, unraveling the mystery of their identity and uncovering a wrenching story of love and betrayal.
Ritter stars as Lucy, a woman with an unimaginable origin story, trying to find her place in the world.
The drama also stars Keeley Hawes, Amanda Fix, Avan Jogia, Rya Kihlstedt and James Hiroyuki Liao.
Anna Fishko created the spinoff of BBC America's Orphan Black. She executive produces with Ritter, David Fortier, Ivan Schneeberg, Nick Nantell, Kerry Appleyard, Katie O'Connell Marsh and director John Fawcett. AMC Studios and Boat Rocker Studios produce.
