Shhh! Don't tell anyone, but: Matt and Mary both have mysterious new friends; Simon and his new charge, Happy, could be in the doghouse; and Lucy keeps mum about the object of a crush.

Mary offers to shield Lucy and her "date" from Eric; Matt gets into a scrape while out with a young woman; and Annie goes to Arizona to bring her parents home.

Halloween is a fright, as Annie tries to scare up a costume for Ruthie; Lucy has a close encounter with the town "monster"; and a childhood memory haunts Eric.

Eric counsels a teen drug addict; Matt's fired from another job; Lucy blows it when she tries to impress the most popular girl in school; Simon and Lucy get lost playing detective.

Annie and Matt are robbed at gunpoint; Mary wants a tattoo; Eric is told to fire the church organist; Simon and Ruthie have the chicken pox; Lucy runs for student-body president (as does Jimmy Moon).

Eric's sister visits the family for Thanksgiving but knocks the stuffing out of everyone when they discover that she has a drinking problem.

Matt helps out an elderly neighbor, but winds up getting in hot water for it; Eric searches for a way to aid a proud but homeless family; Lucy's 13th birthday approaches and she wants a party.

The kids receive some lessons about stealing: Matt and Mary carry on a high-school tradition by lifting a glass from a local diner and Lucy borrows liberally from a term paper Mary lent her.

Everyone's plans for a romantic Valentine's Day are interrupted when Happy, Simon's dog, gets out of the house and is hit by a car.

Mary deals with harassment from a boy she turned down for a date; Lucy's new best friend seems to be hiding something; Simon prepares Ruthie for pre-kindergarten.

Annie volunteers as the church's treasurer pro tem but gets caught in the middle when Eric wants to hire an ex-con against the advice of the church vestry. Meanwhile, Mary agrees to tutor Jimmy Moon in science.

Eric has to tell his parents that George may have to be given over to his birth father, who has resurfaced; Eric's alcoholic sister is released from rehab.

Mary undergoes knee surgery, while Matt learns that Michael Towner was the hit-and-run driver; Wilson reveals the truth about Billy to Eric.

Eric and Annie decide to renew their vows; a widow seeks Eric's help to confront the juvenile who murdered her husband; Mary is reluctant to put down her crutches.

Eric and Annie are taking the day off to spend time together since it's the first day of school for the 5 Camden children. Although, things go array on their first day back in school. Ruthie is caught wearing a hat backwards which violates school policy. Ruthie insists on wearing her cap backwards and ends up getting a 'time out' by her teacher. During Simon's first day at Junior High School, he is caught with a knife that his mother had given him to cut his chicken. Simon is suspended for a day. Mary offers to help Lucy with her locker that doesn't open because of Eric's old lock that he had given her.

Meanwhile, when Lucy takes an aspirin that Mary had given her, the principal notices them with the medicine and takes them to the office. Matt later joins his sisters after Mr. Koper catches him with a beeper- the one Eric left in Matt's jacket after borrowing it. All three of them are suspended for a day. Also, Mary learns that Mr. Koper is her new basketball coach and he's going to he

Lucy must choose between her new boyfriend Rod and her former boyfriend Jimmy Moon after he is dumped by his old girlfriend Ashley, and wants Lucy back. While Lucy makes her decision, the rest of the Camden children are making bets to which guy Lucy will choose. Eric and Annie are at odds when they help newly married couples communicate with each other, but end up getting into a big fight themselves when discussing their burial plot arrangements within their own families. Also, a visit from Annie's father stirs up further problems in the Camden household when he arrives without Ginger after recently breaking up due to his hair piece (toupee).

Matt tries to find the right time to tell his parents that he's accepted an internship in Washington. Meanwhile, his concern for his sisters leads to a confrontation with Mary and Wilson.

Eric and Annie's parents arrive right in the middle of the crisis involving Mary and Matt; and Happy's original owner comes to take him back.

Eric suspects Lucy's ex-boyfriend Jimmy Moon is involved with drugs. Eric and Annie and the rest of the Camden family forbid Lucy to neither see nor speak to him anymore. Lucy does not listen to them and she gets a lot more than what she bargained for when trying to help Jimmy. Meanwhile, Ruthie tries to keep Matt and his new girlfriend Shana apart as she avoids telling Matt that Shana has been calling the house. Lastly, Simon tries out for the baseball team and uses Mary as a good reference, even though he stinks.

Mary's feelings for Robbie resurface when she inadvertently finds out he has a secret date for Valentine's Day, and the whole family schemes to uncover the mystery woman. Meanwhile, with the exception of Lucy who has a date with Jeremy, the other Camden kids feel deflated when their Valentine's plans fall through and they end up stuck at home celebrating Sam and David's second birthday. Lucy and Jeremy's first date does not go as expected as they both keep on running into Lucy's ex-boyfriends. Although all's well that ends well by the end of the episode for everyone.

Annie is plagued with curiosity about what goes on during Eric's therapy, but panics when his doctor invites her to attend one of their sessions. Meanwhile, Lucy tries everything to get excused from jury duty, upsetting Kevin in the process when her views of the judicial system are different from his own. Also, Chandler confesses the extent of his feelings for Roxanne after she is stabbed on the job by a homeless man. Lastly, Ruthie fears that her parents may be heading for divorce court after overhearing them fight.