Big Sky - Season 1

While on a road trip to visit her boyfriend in Montana, Danielle Sullivan and her sister Grace are kidnapped by a truck driver on a remote part of the highway, setting off a chain of events that leads private detectives Cody Hoyt and Cassie Dewell to team up with Cody's estranged wife and ex-cop, Jenny Hoyt, to search for the sisters. But when the investigators discover these are not the only girls who have disappeared in the area, it's clear they've stumbled onto something much bigger than them all.

Forced to form an unlikely team, Cassie and Jenny set out to continue the search for the missing girls. Meanwhile, Danielle, Grace and Jerrie get to work on planning their escape, leading Legarski to struggle with the consequences of his actions as a distracted Ronald deals with a difficult relationship with his mother.

Still on the search for the missing girls, Cassie grows more suspicious of Legarski after a threatening conversation between the two. Meanwhile, Grace manages to make headway on the girls' quest for freedom. Merilee pleads with Legarski to open up emotionally before it's too late, and Helen finally confronts Ronald about his increasingly strange behavior.

Unsatisfied with the investigation now that the girls' disappearance has made headlines, Cassie and Jenny take things into their own hands, tapping into their individual strengths to make headway in the case. Meanwhile, Legarski attempts to keep cool, but Ronald takes a different approach to protect himself. Still captive, Danielle and Jerrie tend to Grace, who makes a painful decision in an attempt to save them all.

Jenny and Cassie feel as if they're closing in on Legarski, but they are racing against the clock as he and Ronald are preparing to move the girls. Jerrie makes one last attempt to convince Ronald to let them go. Elsewhere, Cassie visits Merrilee to question her about her husband and Ronald aggressively confronts his mother.

After Jenny and Cassie learn the truth about Cody's fate, they decide to officially team up to track down Ronald. Elsewhere, Merrilee grapples with the fact that she didn't truly know her husband, while Helen learns more about her son's recent activities.

Cassie and Jenny work against the clock to find Ronald and prove Legarski's guilt, calling on Grace to join their efforts and bravely help them in the process. Just when all the pieces start falling into place, Ronald's emotions get the best of him as he makes an unthinkable decision, even for him. Merrilee plays an unwilling and life-changing role in turning the case on its head.

Cassie and Jenny grow more suspicious of the circumstances with every visit to the hospital, while Ronald finds himself in a precarious situation thanks to a nosy paperboy. With his back against the wall, Ronald will have to address his inner demons and decide just how far is too far.

While knocking on doors and searching for clues, Cassie unexpectedly comes face-to-face with Ronald, which puts her in danger and triggers her memory from the pair's prior meeting. Elsewhere, not feeling like she can trust her husband, Merrilee makes a life-changing decision that puts both her and Rick's fates into her own hands.

Three months after Ronald's escape, Cassie and Jenny have officially partnered up to take down a fresh slew of troublemakers, but all isn't coming up roses; Ronald is still on the loose, a domestic case takes a macabre and deadly turn, and a U.S. Marshall is sticking his nose in their case files.

Right as the women of Dewell & Hoyt seem to be getting used to the new normal, Jenny gets an alarming call from an old flame; leading her and Cassie headfirst into a new case, a new jurisdiction and a whole lot of new trouble. It's time to meet the Kleinsassers.

Cassie and Jenny each face a dangerous attempt to run them out of town while Jerrie has a close encounter with a dangerous threat of her own. Back at the ranch, Blake returns home, where he receives anything but a warm welcome. This ain't your typical family reunion.

Cassie and Jenny hear that a body has been discovered on the Kleinsasser ranch and, fearing the worst, Jenny takes the investigation up a notch, but the Kleinsassers have a plan of their own. Meanwhile, Cassie teams up with Lindor to follow a hot lead on Ronald, who, suspicious that his whereabouts have been revealed, decides to do some damage control—or perhaps just damage.

Cassie, Jenny, Jerrie and Lindor work to get things back on track when the motel is reduced to rubble and both the Kleinsasser and Ronald cases not doing much better. At the ranch, Cheyenne seizes an opportunity to shift the family power dynamic in her favor and all it will take is the truth.

When Scarlet gets an alarming call that her sister is missing, Ronald realizes just how twisted his situation has become and must decide his next move. Meanwhile, Cassie, Jenny, Gil and Rosie find themselves in a whole mess of trouble on the ranch, forced to face off against the worst of the Kleinsasser bunch. But this team is tough and even the strongest family trees can fall.

Cassie and Jenny leave the Kleinsasser women to forge their own path, ridding themselves of their ranch troubles and heading back home. Along with Jerrie and Lindor, they finally get to see Ronald behind bars, though he quickly strips them of any satisfaction by leading them on a wild goose chase, straight into the arms of the syndicate. A brutal battle ensues, clearing a path for Scarlet and Ronald to escape, but while they run off into the sunset Jenny risks her life to save Cassie's. Is this the end for our dynamic duo?