A severed finger shows up at the station and Walt connects it to a new murder and a twenty year old armed robbery. Vic confides to Walt that she's being stalked.
On Election Day, Walt and Branch see things with a new outlook as they race to find a hit-and-run driver.
The sale of illegal prescription drugs appears to be connected to a teenager's death. Cady returns home while Henry catches up with a former flame.
Mia runs away after discovering who her biological parents really are. Will investigates Edward regarding Vivian's murder.
Mia's debutant ball turns ugly when everyone gets to know the truth about her biological mother. Julian wants to get a new cancer drug on the market and looks for help in an old friend. Joanna and Will focus on Vivian's murder.moreless
Joanna suspects Julian is hiding something. Mia introduces her new boyfriend while Senator Haverstock tells Edward strange things about his past.
Joanna spends more time with Julian and gets closer to Samantha. Edward is fired from Bowers' Pharmaceutical and Mia picks the wrong guy to hang out with.
Joanna, now working as Robert's secretary, continues to look into Viviana's death. The Bower family faces some problem regarding Lyritrol, Bowers Pharmaceutical's new cancer drug. Edward finds out that he is a suspect in Vivan's death.moreless
No one was surprised when the wealthy socialite and drug addict Vivian Bowers was found dead of an overdose, except for FBI agent Will Moreno. He is convinced that the death was a homicide, and that someone in Vivian's family did it. He gets help from Detective Joanna Locasto, who at one point had been Vivian's best friend. When Joanna attends the funeral, the family embraces her, offering her a place to stay. She then begins to undercover secrets about how Vivian died, putting herself in danger.moreless
When two of the four teenagers acquitted of raping a Cheyenne girl are murdered, it looks like revenge. But Walt isn't convinced by the evidence and he sets out to find the real killer. Walt faces up to the reality of his wife's death.moreless
A bronc rider, an affair and a secret about a seemingly worthless painting are only a few of the possible motives for why a wealthy beer distributor is found severely beaten. Vic's husband drops in and she makes a great effort to deal with his jealousy of her bond with Walt. Damaging information comes to light that could ruin Branch's campaign.moreless
When Longmire has two dead bodies and a Mexican drug cartel to sort out, he asks Henry for help.
Following Charlie's funeral, Alan meets Internet entrepreneur Walden Schmidt.