Rosanna Arquette will play Jenny in Season 3 of Big Sky as [Spoiler]

Prepare to undertake the heaviest of dives to explain why Big Skys Jenny is the way she is.

Virginia Gigi Cessna, is described as a charismatic person who aids her in her chosen profession, as a scam artist. You should know that when Jenny was a kid, Gigi used her in her grifts, and she now resents her for it.

Gigi is very skilled at insinuating herself into people's lives and then ghosting, which will make things interesting when her latest con brings her to Helena, and Jenny quickly discovers that her mother is in town.

Arquettes TV resume includes stints on The L Word, What About Brian, Ray Donovan, and The L Word: Generation Q. She recently was cast in an as-yet-untitled Peacock series from Borat Subsequent Filmdirector Jason Woliner.

Season 3 of Big Sky, which is titled Deadly Trails, has several new cast members. Reba McEntire (Reba) as Sunny, an outgoing outfitter; Luke Mitchell (Blindspot) as Sonny's son, Cormac, Henry Ian Cusick (Lost) as Walter, a tech executive; Seth Gabel (Salem) as Walter, a recluse living in the wilderness.

Jensen Ackles (Supernatural) will continue to portray Beau Arlen, the newly appointed sheriff who first appeared in the Season 2 finale.

The new season of Big Skys will be available on a new night Wednesday, September 21 at 10/9c, where it will take the show out of The Conners, The Goldbergs, and Abbott Elementary.