As the date of the vow renewal approaches, Bridget decides she needs to reveal her true identity to Andrew. Meanwhile, with Bodaway Macawi closing in on Bridget, Agent Machado is forced off the case, and Henry struggles with the decision to tell Bridget the truth about Siobhan.

Catherine is unsuccessful in her plan to destroy the relationship between Andrew and Bridget, who is still posing as Siobhan. Machado learns who wanted Siobhan dead. Siobhan's plan to help Henry hits a snag.

Still posing as Siobhan, Bridget tells Agent Machado that someone tried to kill her months earlier and that she suspected Andrew. Bridget stops by Henry's apartment, and Siobhan overhears her accuse Henry of killing Tyler. Meanwhile, Catherine takes extreme measures to bring Andrew closer to her.

Bridget decides she won't feel safe unless she testifies against Macawi; Machado's actions get him suspended; Henry becomes impatient with Siobhan and gives her an ultimatum.

An attempt is made on Bridget's life. As Machado investigates, Henry accuses Siobhan of putting out a hit on her sister while Bridget believes Olivia is responsible. In other events, Andrew admits he asked Malcolm to leave, and Juliet goes missing.

Bridget becomes concerned when she can't get in touch with Malcolm; Juliet learns that someone in her family had a hand in Tessa's attack; Siobhan makes a confession to Henry.

Machado's past with stripper Shaylene Briggs is revealed. Siobhan masquerades as Bridget to Malcolm. Henry realizes that Bridget knows more than she should. Tyler takes something from Siobhan that's a key piece of evidence in her revenge plot.

When Andrew proposes again, Bridget realizes that she is in over her head. Olivia becomes more suspicious of Malcolm as he works at Martin/Charles. Juliet makes an important decision that forces her mother Catherine to take drastic measures.

Bridget encounters Dylan, who was an important part of the sisters' past. After finding something in Henry's possession that belongs to Bridget, Malcolm befriends Henry to keep an eye on him. Catherine asks Andrew to make a big decision regarding Juliet that could change their family dynamic.

Bridget retraces Siobhan's last steps prior to her disappearance and discovers that her twin kept a secret office. Olivia blackmails Henry into introducing her to Gemma's wealthy father. Tyler faces a moral decision that could impact Siobhan and Andrew.

Catherine, Juliet's mother, shows up in New York, and her presence strains Andrew and Bridget's relationship. Bridget uncovers a man from Siobhan's past who she thinks might be a valuable source of information about her sister. Meanwhile, Henry finds a lead that makes Agent Machado believe he is closing in on Bridget.

Bridget offers to host a fund raiser for Juliet's school and learns that her friend Greer knows one of Siobhan's secrets. Siobhan can't believe that Bridget has adapted as well as she has to her new life. Malcolm goes to work for Andrew. Henry mourns his wife.

Henry thinks he has identified a suspect in the disappearance of his wife, Gemma, but realizes that he needs to work with Bridget to find out more information. Malcolm goes to the police about his suspicion of Charlie, while Juliet's interest in her teacher, Mr. Carpenter, begins to turn into an unhealthy obsession. Meanwhile, back in Wyoming, Agent Machado meets with an informant.

While Henry and Olivia form an attraction to each other, Bridget's realizes she's developed feelings for Andrew. Bridget's new NA sponsor raises concerns with Malcolm. Hoping to find out more about Siobhan, Bridget sets up an appointment with her sister's therapist.

Andrew and Bridget learn some unsettling news that also affects Henry. Juliet continues to grow closer to her teacher, Mr. Carpenter, and Malcolm arrives in New York, where he is confronted by Agent Machado. Siobhan's relationship with Tyler is jeopardized.

With Agent Machado pressing down, Bridget, still pretending to be Siobhan, tells Andrew and Henry that she has a twin sister. Henry is now suspected of being responsible for Gemma's disappearance. Juliet's partying is out of control. After escaping, Malcolm is on the run from his kidnappers.

When Bridget is unable to get in touch with Gemma, she starts to suspect that something has happened between Gemma and Henry. Juliet starts a new public school, where she must defend herself against the school bully, and her teacher, Mr. Carpenter, comes to her rescue. Bridget asks Charlie for a favor that could come back to haunt her, while Agent Machado starts to investigate Malcolm's disappearance.

Gemma asks Bridget, who is still posing as Siobhan, to do her a risky favor. Henry receives some disappointing news about his writing career, and Andrew struggles with his rocky relationship with his teenage daughter, Juliet. Bridget meets a potential new sponsor named Charlie at a local Narcotics Anonymous meeting, while Malcolm battles his demons when he is put in a situation that threatens his sobriety.

Bridget, still posing as Siobhan, takes a trip to the Hamptons with Andrew, Gemma, and Henry to celebrate her birthday. Despite the close proximity to Gemma and Andrew, Henry is determined to rekindle his affair with Siobhan. Gemma learns some upsetting news, and FBI agent Machado uncovers some new information, which forces Bridget to reveal some information about her past in order to protect her secrets.

Bridget discovers a possible clue that could lead to Siobhan's killer, and uncovers intriguing information about Andrew. Machado continues to pursue Bridget. Henry and Gemma butt heads over their investment in Andrew's hedge fund.

Bridget tries to cover up a crime she committed without blowing her Siobhan cover. Machado stays in NYC to learn more about Siobhan. Bridget confides her secrets to Malcolm. Andrew and his business partner throw a party. Gemma's suspicions of Henry grow.

Fearing for her life after witnessing a murder, Bridget Kelly secretly flees to New York to see her estranged twin sister, Siobhan; after Siobhan disappears, Bridget assumes her identity.