The wife of a mob boss hires Zoe to find her daughter. An overprotective police officer refuses to let them see the case files so they seek professional help. Dan goes undercover and faces some difficulties. The team is threatened by the mob boss to back off the case. They learn that the girl may not really be missing and that some people may be lying. Meanwhile, Dan tries to help Cliff become less arrogant and delusional after he flirts with one of his teachers.

Zoey and Dan try to find out if a medical researcher who was locked in a room filled with hydrogen gas was murdered or if the incident was an accident. A psychic who claims to be receiving messages helps them and eerily is able to give them clues to the mystery. Meanwhile, Zoey bids on a silver dollar on an online auction and is frustrated when another bidder keeps topping her bids. Also, Hannah asks the psychic if she can talk to her mom.

A man who narrowly misses getting hit by a bus suddenly realizes that he has no idea where he is and who he is. He hires Zoe and Dan to find out his identity. After narrowly escaping severe injury or death several more times, Zoe and Dan are convinced a hit man is after the man; who is convinced that his name is Brad Pitt and that he has a sister named Mary. Amazingly, Zoe and Dan are able to locate his girlfriend, who is very upset at him for some reason. They must convince the angry woman to reveal his identity. Meanwhile, Hannah practices for a flute recital and M., Zoe, and Dan are annoyed by a new tenant in their office building.

A professional basketball player wakes up from a hangover and sees a dead woman's body on his bed. Fearing his freedom, he flees while a sports reporter records his every move. His agent hires Zoe, Dan, and M. to find the basketball player and clear him of all charges. A competitive rival, a jealous wife, crazy fans, and the athlete himself round out the suspects in the murder.

Dan goes a bit too undercover when he is assigned to find out when and where upcoming jewelry robberies are to take place. Small-time robber Carmen romances Dan while Zoey and M begin to wonder if he is purposely misleading them and returning to his criminal past when a robbery takes place at a different jewelry store than the one he told them it would. Zoey is annoyed by an unattractive man at a bar. Taylor and Zoey are in serious trouble when a friend of Taylor's who is illegally enrolled in Taylor's high school under their address gets in a fight with another boy who sues him.

Zoe and M attend a fashion show. Zoey witnesses a famous designer being kidnapped. There is no shortage of suspects from a cheating wife to a rival designer. When the ransom money is captured by the kidnapper, Zoe and Dan must find the designer and get M's money back or they could lose their jobs! Also, Taylor, Cliff, and Hannah are forced to give their messy house an extreme makeover and face some difficulties.

Zoey finds out that her boyfriend is married and angrily breaks up with him. The next day he is found murdered and Zoe is suspected of murdering him! Zoey finds out from her bank that her identity has been stolen by a woman resembling her who has been using Zoe's name. Taylor, Cliff, and Hannah are delighted when a large expensive boat is delivered to their house while Taylor is furthur excited when Dan buys an expensive lightbulb for her fundraiser.

M's ex-husband Graham decides to run for mayor and Taylor decides to work on his campaign team. At a campaign rally, a bullet that evidently was intended for him hits Taylor's friend and she is rushed to a hospital. Due to some excellent ""Zoeyism"", a secret affair and the many clues required to figure out who is behind the attempted murder are found. Also, Dan is concerned when he suspects a campaign worker of flirting with Taylor.

A kidney is stolen from a nurse on an elevator who is delivering it for a surgery. While searching for the kidney, Zoe and Dan try to expose a man they suspect of faking disabilities. Zoey's car is stolen with Hannah's volcano science project in it! Zoey must get her car back with Hannah's volcano before Hannah finds out it is missing as well as find the kidney and save the patient's life.

Melanie St. John, an old friend of Zoey's is suspected of murdering her estranged husband Robert. Zoe and Dan are assigned to work on the case and find that there are many more suspects including a son-in-law who had a suspicious relationship with his father. Zoe and Dan are sprayed with a fire extinguisher when they interrupt a burglary in progress at Robert's house. Taylor gets a job as a waitress in a mama and papa restaurant and begins flirting with a waiter who also works there.