Molly is on the hunt to find the woman who killed an Assistant District Attorney inside a church during her wedding ceremony.
When a man is killed at a black-tie gala, it leads Molly to chase down an assassin who has been killing off abusive husbands. Meanwhile, Jake is still doing his best to delay their divorce for Molly.
Molly is assigned to the case of a female bank robber. Molly is conflicted when she discovers the identity of the perpetrator, especially since the FBI agent she is working with seems to have no such problem. In her personal life, Molly's boyfriend is subpoenaed to testify at her divorce hearing, and she suspects her brother is cheating on his wife.
Molly is on the hunt for a serial killer who murders women that remind her of her own abusive mother. Meanwhile, Molly introduces Dan to her family for the first time and Becca makes plans for Hailee's Quinceanera.
Molly is on the case when a famous basketball star is murdered in his home. Meanwhile, Becca plans a date night to let Billy in on some life changing news, and Dan receives a credible tip leading to an arrest of an unlikely suspect.
To avoid jail time Billy makes a deal with Dan to help the DEA collar the leader of the drug cartel. Molly has to conduct a dangerous pursuit into the wilderness to catch a mentally disturbed native-american woman who robbed and killed a gasstation owner.
Molly has to work with a sexist, retired Texas Ranger after an arrest she makes leads to a tip about an unsolved murder case he wasn't able to close, and Billy is forced to make a decision that could help capture a drug cartel leader but would also put his family's safety at risk.
When Molly finally learns about Billy's involvement with the drug cartel she combines forces with the DEA to solve the hostage situation and catch the cartel leaders.
