An emotional Adrian refuses to leave the house.

Ben is having a hard time settling into marriage, while Ricky and Amy grow even closer.

Grace goes away on a medical mission, while Peter suspects the worst.

There's an emergency with John resulting in Ricky & Amy taking him to the ER. Grace meets a new guy named Daniel. Adrian wants Ben to tell her how he really feels.

Ricky sleeps with Adrian which gives Ben a chance to get out of the marrige everyone thinks....

Rumors around school suggest that Ben is to blame for the stillbirth of his daughter Mercy, but Adrian defends her man. Counselor Katelyn extends her guidance skills beyond the halls of Grant High.

With the help of Amy, Ricky tries to get in to college. Grace is having trouble fitting in too Daniel's college life.

It's time for senior prom!! Amy is mad that Ricky doesn't want to go so she pressures him into taking her to prom. Adrian and Ben go together, and Amy finds out Adrian is trying to get pregnant. Later, after the dance Adrian tries to seduce Ben into sleeping with her so she can be prego and keep him in the marriage.

Adrian changes her mind about Ben and sets her sites on someone else.

Nora finds a new place to live, Ricky has an unexpected visitor who has run into legal problems after sexting nude photos of his girlfriend, and Grace plays matchmaker.

Adrian is introduced to the brother of one of Daniel's friend, and sparks fly. Amy hopes for a proposal from Ricky - who has a surprise of his own.

Jack tries to reconnect with Grace while working on a project for school. Elsewhere, George notices that Anne and Nora have been bonding.

Grace helps Jack with his graduation speech; Ben and Adrian go out to celebrate; Ricky's graduation speech features a surprise for Amy.

Amy and Ricky are now engaged, but Amy starts to consider what marriage may really mean.

Summer school is the backdrop for another series of intrigues: Amy, Madison and Lauren argue, Henry is in the doghouse with both Ben and Alice, and summer plans take a sudden twist for Grace and Ben.

Kathleen struggles with a decision whether or not to allow a boy from South Africa to stay with them instead of attending boarding school, especially when she considers who his father is.

Amy is increasingly short with everyone in her life, including Ricky, leaving him wondering what is going on with her, but he is not prepared when she reveals that she might be pregnant again. Ben, determined to get permission from Dylan's parents to see her, makes another attempt to win them over, but it doesn't turn out quite like he hoped when he ends up sharing too much information about his family.

Dylan and her pals surprise Ben at school, while Grace doesn't want Jacob attending school with her. Elsewhere, Kathleen tries to understand her late husband's secrets; and an overburdened Amy acts ornery at home with Ricky.

Ben and Dylan go on their first real date together. Elsewhere, Tom runs into problems with police.

A desperate Kathleen resorts to bribery to get Grace to talk to Jacob. Elsewhere, Dylan attempts to befriend Adrian.

Amy learns she's doing poorly in summer school, so her dad tutors her and provides her with some life advice.

Lauren talks to Madison and gets ignored. Meanwhile Madison text some with a phone in her bedroom while ignoring Lauren.

Amy's mistaken about why she's the focus of gossip, and Grace grows jealous of her. Elsewhere, Ashley and her mom return from traveling abroad; and Ben asks his father to let him enroll in Dylan's school.

In the fourth-season finale, Anne reveals some news to her loved ones. Meanwhile, Ben considers transferring to Dylan\'s school.