Switched at Birth – Al posto tuo

Angelo is now wealthy, but suspicions about him continue. John and Kathryn consider a run for public office. Bay faces the Student Honor Board after accusations of cheating, and Daphne's distraction with Jeff causes trouble.

Regina is shocked when Angelo tells her about Lana and the baby. Bay discovers the transition to Carlton is not easy. Emmett sees something from Nikki's past that makes Toby question who this girl is.

Bay finds herself on the wrong end of Natalie's wrath. Kathryn possibly hurts John's campaign during a radio interview. Regina gets bad news about her health. Toby and Lana bond.

Looking to give Bay an opportunity to meet the mother of her soon-to-be-born half-sister, Toby invites Lana to dinner. Meanwhile, Daphne tries to help Travis with his problems at home.

Daphne may have taken on more than she can handle, while Kathryn volunteers to direct the play at Bay's school. Toby approaches his grandfather for a college recommendation.

Bay throws a party, which leads to a heated confrontation between Noah and Travis. Angelo and Lana chaperone the event. Regina butts heads with John and Kathryn over the food truck.

Daphne and Travis have a falling out. Bay and Noah's relationship blossoms, but Emmett won't give up. Toby meets a new girl at his father's campaign headquarters: Elisa, a volunteer with a secret agenda.

Daphne feels torn when the deaf students at Carlton rally the school board to prevent even more hearing kids from attending through the pilot program. Meanwhile, Bay questions Regina's behavior.

When news of the school's closing spreads throughout campus, Daphne leads the students of Carlton School for the Deaf in arranging a demonstration to take place on the eve of the "Romeo and Juliet" play.

Daphne and the students of Carlton School for the Deaf find out if their protest will keep the school open, and deaf. Toby makes a surprise announcement, and John's campaign for office ends unexpectedly.

Regina returns from rehab and tries to transition back to life at the Kennish house. Daphne has grown closer to the Kennish family and this new family dynamic does not sit well with Regina. Bay runs into Ty.

After a rocky start, Bay and Ty get to know each other again. Both Toby and Travis approach John about a manager position at the car wash. Kathryn and Daphne have a hard time with Bay's request to stay with Regina.

Bay is upset that Toby is giving up music and gets him a gig to reignite his love for music, and Bay and Daphne finally begin to make up.

The politics of being a senator's wife are put to the test when Kathryn has an uncomfortable encounter. Daphne gets mixed signals from Jace and Bay learns more about Mary Beth and Ty.

What if Regina had told the hospital about the switch when she discovered it years ago? And what if both girls had been raised in the privileged Kennish household from age three?

Daphne is torn between her obligation to her family and her desire to spend time with Jace. John must face the reality of his situation. Angelo offers to help Regina bring in business.

Angelo invites Bay to join him at a meeting concerning the custody of his baby. When Daphne and Jace uncover a scandal regarding Senator Coto, they must decide what to do with the confidential information.

Bay plans a Deaf Day at Maui, Kansas, and Daphne runs into Chef Jeff. Meanwhile, Toby tries to help Nikki cope with a family tragedy from her past.

Daphne's frustration with Jace comes to a head when Parker shares some upsetting news, and Nikki confronts her mom about her dad's history.

Toby and Nikki end up in unexpected places when their pre-wedding parties go awry. Meanwhile, Kathryn is surprised at Jennice's extravagant wedding requests and Angelo and Regina reevaluate their relationship.

John and Kathryn contemplate telling Toby their true feelings about his decision to marry. Daphne must own up to her mistakes while Bay works on a plan to continue her relationship with Ty while he is overseas.