Big Love is set to air its series' finale next Sunday, and some of the cast is not waiting around to find their next projects. Ginnifer Goodwin is already signed for the ABC fantasy series Once Upon a Time, and now Chloë Sevigny has joined the cast of HBO's upcoming four-hour miniseries on Lizzie Borden.

Tom Hanks and Gary Goetzman will produce through their joint company Playtone, which also produces Big Love. The story will follow Lizzie Borden's trial, from which she was acquitted of killing her father and stepmother with a hatchet. Chloë Sevigny will star as Lizzie Borden, as well as co-executive produce.

Bryce Kass is writing the screenplay. The miniseries will likely air in 2012.