Bridget realizes she's growing fond of Andrew. Henry and Andrew's business partner bond. Malcolm has doubts about Bridget's new NA sponsor. Bridget decides to meet Siobhan's therapist in order to gain insight into her sister's life.

Henry homes in on a suspect in Gemma's disappearance. Malcolm goes to the police with his hunch about Charlie. Juliet becomes obsessed with Mr. Carpenter. Machado meets with an informant in Wyoming.

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.

Juliet's mother visits and causes trouble for Andrew and Bridget. Bridget discovers someone she believes is key to learning more about her sister. Henry finds a lead that causes Machado to think he's closing in on Bridget.

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.

Bridget encounters someone who played an important role in her and Siobhan's past. Malcolm discovers something of Bridget's in Henry's possession. Catherine asks Andrew to make a decision about Juliet that could have major ramifications.

Bridget realizes she's in over her head when Andrew proposes again. Olivia becomes suspicious of Malcolm. Juliet makes a decision that doesn't sit well with her mother.

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.

Bridget's search for a missing Malcolm leads her to his hotel, where security footage shows that Andrew was the last person to see him before the disappearance. Meanwhile, Juliet links the attack on Tessa to someone in her family; and Siobhan explains to Henry why she faked her death.

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 its he asked Malcolm to leave, and Juliet goes missing.

Bridget decides to testify against Bodaway Macawi; Machado is suspended from the FBI. Henry gives Siobhan an ultimatum: give up the revenge plot or they're through.

Bridget, as Siobhan, tells Machado about the attempt on her life and who she suspects was behind it. Bridget accuses Henry of Tyler's murder unaware that Siobhan is listening in. A desperate Catherine takes extreme measures to get closer to Andrew.

Catherine's plot to drive apart Andrew and Bridget falters. Machado learns who wanted Siobhan dead. Siobhan's plan to help Henry hits a snag.

As the vow renewal nears, Bridget realizes she first needs to tell Andrew the truth about who she really is. Meanwhile, just as Bodaway Macawi starts to close in on Bridget, Agent Machado is forced off the case and Henry decides whether he should tell Bridget the truth about Siobhan.