Monday’s episode of Switched at Birth, called “Pandora’s Box,” begins with Daphne looking through Regina’s guitar case, which contains pictures of Bay as she was growing up. This beginning scene automatically informs the viewers that the entire episode will revolve around that guitar case.
When Regina sees Daphne looking through those pictures, she is terrified. Daphne confronts her and asks her about those pictures. Regina tells Daphne, “I knew. I knew that you and Bay were switched.” Regina is in the process of explaining the pictures when the two are interrupted by Kathryn. She gives Regina a scarf she has bought her, and she takes Daphne to school.
As Regina steps out of her house, John stops her and informs her that the two of them have to go to court and sue the hospital. He also tells Regina that the court has something against them. He asks Regina if she knows what it would be. Regina hides her guilt by avoiding the question and she quickly leaves.
Wilkie is taking his books out of his locker when he meets Daphne. Wilkie tells her that even though he is suspended from school, he still needs to complete his homework. Daphne is still quite upset from seeing the pictures in the guitar case. As a result, she and Wilkie both leave school together. They go to Daphne’s old house, and the two of them drink alcohol and talk.
Daphne then asks Wilkie if everyone is a liar. Wilkie says that everyone lies. Daphne denies that and says that she never lies, but Wilkie is quick to contradict her. He tells her that she lies every time she says that Emmett is not in love with her.
Bay confronts Emmett, and angrily tells him that she cannot get him out of her head because he kissed her. She even asks him if the kiss meant anything to him. In response, Emmet kisses her again.
John and Kathryn are busy preparing for trial, while Regina is agitatedly making phone calls and asking if the private investigators have said anything to the hospital. At this point, no one knows what private investigators Regina is talking about. However, Regina unveils a truth at the end of the episode that involves private investigators.
Bay and Emmett are passionately kissing and Bay is learning sign language in between their kiss breaks. Bay then talks to Emmett and asks him why he never speaks. Emmett simply replies that he never feels the need to. When Bay asks for an elaboration, Emmett does not answer her and instead becomes quite upset. Sensing this, she asks him if the two of them can go back to kissing because they “seem to do it quite well,” she says.
Bay goes to Emmett’s place and sees the pictures on his wall. When she sees that the majority of pictures on his wall are Daphne’s pictures, she becomes quite jealous. Sensing this, Emmett picks up a cloth and covers all of Daphne’s pictures. He is about to tear another one of Daphne’s pictures when Bay stops him.
Meanwhile, Wilkie and Daphne leave Daphne’s old house. As they wait for Wilkie’s “boot guy” to show up, the two start passionately kissing. The two get closer, but then they both stop. Since the two have been waiting for quite a while for Wilkie’s “boot guy” to show up, Daphne texts Emmett.
Emmett receives the text as Bay is trying to talk to him. His texts interrupt Bay three times. When Emmett tells Bay that the first text is from Daphne, Bay becomes slightly angry. However, the other two times that Emmett receives the texts, Bay leaves, despite Emmett trying to stop her.
Emmett picks up Daphne. As Daphne leaves Wilkie’s car, he gives her a look and says, “Liar!” She rolls her eyes at him and leaves. Emmett signs to Daphne and tells her that her choice in boys “has gone from bad to worse.” He also signs to her and tells her that one of her buttons is missing.
Wilkie continues to look at the two of them in a teasing manner. He also asks Emmett if he always runs a taxi service or if it’s only for special friends. Emmett ignores him.
Emmett immediately senses that something is wrong with Daphne when he smells alcohol on her breath. The two go to Emmett’s place, and Daphne tries to tell Emmett that Regina knew about the switched at birth situation, but she would not tell her about it. Emmett tells Daphne that Bay deserves to know about the guitar case, but Daphne refuses to tell her about it.
Meanwhile, Regina goes home and tries to get rid of the guitar case. Kathryn, John, and Bay all see her attempting to throw out the guitar case. Kathryn and John are surprised that Regina plays the guitar, but Bay tries to get a hold of the case. Regina runs away with the case, and Bay texts Daphne, “What was in the guitar case?” Daphne does not respond.
Daphne sleeps over at Emmett’s place. She thanks Emmett and says, “My mom would’ve killed me if she smelled alcohol on my breath.” Daphne then notices pictures of Bay and Emmett and she asks him about it.
Emmett says that the pictures were taken at the junkyard when he gave her a ride. He then adds, “You know I take pictures of everything.”
Daphne is suspicious that Emmett has fallen for Bay, but she does not say anything.
Daphne and Bay meet in the morning, and Bay asks Daphne about the guitar case. Daphne tells Bay that she would like to tell her, but she can’t.
“You’ll have to ask your mom,” Daphne says.
After being contemplative for a few seconds, Bay asks, “You mean Regina?”
”Yeah. Cause she’s certainly not mine,” Daphne replies.
Both Kathryn and John Kennish are at trial, and they find out from the hospital that Regina hired a private investigator in 1998 to track Bay. At that time, both Bay and Daphne were three years old.
In the Kennishes’ living room, Bay, Daphne, and the two Kennish parents are all looking at Regina and awaiting an explanation.
Regina explains that her husband, Angelo, suspected that Daphne was not his biological daughter. He suspected that Regina had an affair. Regina then did Daphne’s testing herself and found out that Daphne really was not her biological daughter. Angelo left, and he left Regina and Daphne when he had an excuse that Daphne was not his biological daughter.
When Regina found out that Daphne was switched at birth, she was already three years old. At that point, it was too late to go and switch Daphne with Bay. Regina had already started loving and caring for Daphne. Regina also had DUI problems, and she did not want another family taking away Daphne from her.
At this point, Bay is hurt and she asks Regina why she didn’t come for her. Regina said that at that point, she was already a part of another family; she was Bay Kennish. However, she did keep a private investigator, and she kept pictures of her as well as bio-data of her and her parents. That was in the guitar case. She did what she thought was best.
John tells Regina, “I want you out.”
Bay goes to Emmett’s place to vent, and Emmett tells her to slow down because he cannot understand her. Bay becomes even more frustrated, and she says, “No, I don’t want to slow down!”
She then suddenly tells Emmett that she doesn’t know what she’s doing at Emmett’s place, and she turns to leave. Emmett stops her and hugs her as Bay cries.
Regina talks to Daphne. However, Regina’s efforts to make her daughter see the situation from her point of view are futile. She tells Daphne that she raised her, tucked her in every night, protected her. She then asks Daphne that after all of that, Daphne still “wants to be with them?” Daphne, however, is still quite angry and refuses to understand.
Meanwhile, John is angry and tells Kathryn that he wants to take custody of both of their daughters.
Regina is quite heartbroken and packs to leave. When Toby sees her and asks her if she’s leaving, Regina says that she is going to Melody’s place for a couple of days. Toby says that he doesn’t want to get involved, but he knows that Regina is a good person because she helped him out with his problem. At this point, Regina becomes quite emotional, and she hugs him.
Toby leaves, and Regina sees Bay. When Regina calls out to her, Bay just leaves
