Dave and Maddie quarrel over Sam as they keep watch on a man for his mistress, who's convinced he's two-timing her-with his wife.

Maddie feels more and more confused about Sam and Dave after an all-night stakeout with Dave ends in an early morning proposal from Sam.

Sam confronts Dave about Maddie, and tells him he's not good enough for her.

Maddie tries to ignore the previous night as she and David tackle a new case: a woman wants evidence that her fiance loves her and not her father's money.

Rona Barrett investigates the rumors about discord among the principals at the Blue Moon Detective agency.

Maddie's strange mood has David worried so he spends the evening following her, but ends up involved in a murder.

After an embezzling accountant leaves her penniless, ex-model Maddie Hayes decides to sell the few failing businesses she still owns, among them a detective agency. But private eye David Addison wants to keeps his job, so he persuades a reluctant Maddie to form a partnership. Their first case gives them little to go on: Maddie gets a broken watch from a dying man.

Maddie becomes consumed with curiosity when David announces he must fly back to New York to attend the funeral of his former wife's brother.

A depressed Maddie gets a chance to see what her life and the rest of Blue Moon staff would be like if she had sold the agency as she originally intended.

Ms. Dipesto tries to solve a haunted house case refused by Dave and Maddie to show Bert Viola that she's just as good a detective as he is.

As the sole eyewitness to a murder, Maddie is given police protection. But David suspects that her handsome young bodyguard is setting her up for death.

Dave and Maddie agree to each arrange what they consider to be an ideal evening for the other, but the concert tickets Dave buys from a scalper get them into nothing but trouble.

Dave and Maddie each dream their own solutions to an unsolved 1946 murder case after hearing the story while finishing an investigation.

Ms. Dipesto finds a baby left in her apartment by a woman named Mary fleeing from the hit men who killed her husband, and Dave and Maddie quarrel over using the agency phones as a "Santa hot line."

Dave and Maddie face a difficult situation when they have to tell their client that the son he hired them to find is a notorious contract killer.

Maddie believes that a client's design secrets are being pilfered from the astral plane by a psychic.

David's estranged father makes a surprise visit to announce his upcoming wedding and to introduce his bride-to-be, who comes as a shock to David.

A man hires Dave and Maddie to find his wife, who's been making mysterious late night phone calls to him, the same wife he's sure he killed and buried in the forest.

Dave and Maddie are hired by a married woman to find the man she has been sharing a torrid romantic correspondence with and make sure he understands the arrangement is over.

A priest asks Dave and Maddie to find a woman he's become infatuated with during confession and whose latest revelation was her intention to kill herself.

A boy hoping to watch Moonlighting but forced to study Shakespeare instead daydreams about the cast performing their own version of The Taming of the Shrew complete with Petruchio Dave and Kate Maddie.

Dave searches for a suitable Lamaze partner so he can be prepared for Maddie's delivery.

Maddie returns home by train. She is still unsure about David and has dreams and nightmares about being married to him on the trip back. On the journey, she meets a systems analyst returning to Los Angeles and they become friends.

Maddie becomes infatuated with a radio talk-show host who has apparently been murdered while he was on the air.

Maddie and Dave get trapped on a train filled with mystery buffs when they try to deliver Agnes on time for her big weekend solving a make-believe murder staged by a famous author.