Jennifer observes a pattern of burglaries occurring in affluent residences following garage sales, with one instance resulting in a fatal accident. However, she suspects that the death was not an accident. She persuades Detective Adam Iverson to accompany her to some of these sales, where they discover potential suspects for the burglaries. Nonetheless, they fail to find any leads to the murder. Eventually, Jennifer manages to identify the killer.
Jennifer Shannon possesses a talent for identifying rare and valuable items at garage sales that she can resell at her consignment store, Rags to Riches. When her friend and owner of a self-storage facility, Martin, is murdered shortly after auctioning off an abandoned storage unit filled with unique possessions, Jennifer becomes a crucial witness in the investigation. Together with Detective Lynwood, she singles out a dissatisfied customer as the main suspect, while she and her business partner, Danielle, examine the auctioned boxes. As her husband Jason worries for her safety, Jennifer's store is robbed, and she has a confrontation with Martin's angry widow. Jennifer and Danielle eventually uncover the glittery evidence they need to implicate the surprising real culprit, and they must hurry to save a life while risking their own.
While sifting through a box of clothing purchased at an estate sale, Jennifer discovers a valuable yet antiquated wedding dress. Upon closer inspection, she detects a bloodstain on one of the pockets, leading her to investigate further. She uncovers the story of Helen Carter, the bride, whose groom vanished after the wedding ceremony. Jennifer diligently pursues the case and employs Luminol to detect bloodstains in a church storage closet, revealing critical evidence. Although she convinces Ted to confess to the murder, Helen eventually confesses to her involvement in the crime. The court deems her actions justifiable, and she evades prosecution. After a 35-year separation, Helen and Ted rekindle their romance.
Sandra, a previous friend of Jennifer's, proposes selling all her antique goods from her store, Past Perfect, to Rags to Riches, without demanding upfront payment and only receiving 20% commission for each sale. Upon investigating Sandra's barn, where she stores extra antiques in Madison, Jennifer discovers a basement filled with beautiful antiquities, including the body of Sandra's former fiancé, Michael Chambers, who vanished two years earlier, causing Sandra to believe he left her for another woman. Sheriff Conners spearheads the ensuing investigation, and Jennifer must uncover the truth to prove Sandra's innocence. Along the way, Jennifer meets Kimberly Colette Baumaine, a recent widow who brings her late husband's antiques to Jennifer's store, which help Jennifer connect the dots.
A sequence of murders mimicking popular mystery novels occurs, beginning with the killing of Art Henley, whose death echoes Agatha Christie's Three Act Tragedy. Next, Gerry McNally is murdered, following Arthur Conan Doyle's A Study in Scarlet. Thirdly, Myles Fowler's murder is somewhat similar to the mystery novel The Circular Staircase.
Anne's husband Steve is found dead at an isolated beach, and despite authorities concluding that his death was a result of accidental drowning, Anne believes that he was murdered. The prime suspect, Steve's brother Todd, comes into the spotlight when Steve's business partner Mitch is also attacked, only to be found dead later. The case becomes more perplexing as the clues don't add up. A local surfer with a criminal past who had vandalized Steve's car is arrested, but Jennifer and Detective Lynwood work together to uncover the truth. In the meantime, Logan attempts to pursue theater to impress his crush, while Jennifer and Dani strive to mend a married couple's relationship as they each try to sell the other's memorabilia to the store.
The body of a bass player is discovered, having died from apparent suicide by hanging. Shortly thereafter, Cassie is found dead from an apparent robbery gone wrong. This happens just before a planned tour with a popular country singer. Meanwhile, Dani's older sister Beth Ann pays her a visit in town.
Jennifer Shannon discovers a body of a local college history professor inside a suit of armor she bought. As the investigation begins, the professor's teaching assistant is also found dead. Jennifer soon realizes that she is in the middle of a deadly game of deception with the killer.
Jennifer buys an old reel-to-reel recorder at a garage sale and discovers it contains a recording of a man begging for his life. After tracking down the owner, Dr. Vedders, she learns that he has been killed. Dr. Vedders was a psychologist who had just retired and worked with a group of patients at a community center. Jennifer finds herself with a long list of suspects including an unhappy wife and a group of abandoned patients. When she finally locates Kendahl Hartman, who had disappeared after Dr. Vedders' death, Kendahl is also found dead. Jennifer and Detective Lynwood race to solve the case before Jennifer becomes the next victim.
Jennifer stumbles upon a mysterious puzzle box owned by the Andronicus family, a group of real estate developers whose latest project is not well-received by the locals. Soon after the box goes missing, some members of the Andronicus family die under mysterious circumstances. Intrigued, Jennifer decides to conduct her own investigation into the deaths in a way that is not conventional.
