Nancy’s reawakening brings her into conflict with her widowed father, Carson Drew, who is dating Detective Karen Hart. And, when a supernatural presence begins to haunt Nancy’s investigation, she discovers that the current crime has an astonishing connection to the long unsolved murder of a local girl. Whether the ghost is here to help, or hinder Nancy remains to be seen, but one thing’s for sure: Nancy’s going to have to unravel the clues from both the living and the dead to solve the crimes.
When Nancy learns that Tiffany Hudson’s corpse is being moved out of Horseshoe Bay for a private autopsy, she puts her investigation into Lucy Sable’s dress on hold to pull off one of her most risky missions yet. Meanwhile, Bess and Ace enlist the help of a stranger in an attempt to help Nancy. Lastly, the town gathers to participate in the annual bucket ritual done on the last night of the Summer Festival.
As the funeral for Tiffany Hudson nears, her confused spirit seemingly haunts Horseshoe Bay. Nancy invites Bess to stay with her, allowing Nancy to figure out what Bess is hiding. Nick struggles with what he learned about Tiffany. Meanwhile, George reluctantly seeks help from an unusual source as Ace runs into a significant person from his past. Lastly, Carson continues to advise Ryan, much to Nancy’s chagrin.
When Nancy realizes that George is possessed by Tiffany’s spirit, she must act quickly to rid her friend of the ghostly passenger before it’s too late. Meanwhile, a mysterious stranger, Owen, wanders into The Claw and asks the gang to cater a charity gala happening at the country club that same day.
Believing that solving Lucy’s murder will lead to solving Tiffany’s murder, the Drew Crew resolves to find a way to speak with the only eyewitness to both murders-Dead Lucy herself. To prepare for this incredibly risky séance, they set off to investigate the last few hours of Lucy Sable’s life. Ultimately, they confront Dead Lucy in a horrifying séance, and Nancy is faced with a truth that seems to validate her greatest fear.
Nancy and the Drew Crew desperately search for George’s missing sister, Ted, whose kidnapping eerily mirrors the investigation that started Nancy’s sleuthing career. Meanwhile, while revisiting the trauma of her past, as a means to solving the present-day mystery, Nancy finally reconnects with her father just as an escalation in the Lucy Sable investigation threatens to separate them forever.
Nancy and the Drew Crew are still reeling from witnessing the visions of their deaths. They realize even more so now that they need to come up with a plan to stop the Aglaeca before it's too late. Meanwhile, Detective Tamura shows up at The Claw to bring Nancy in for questioning as she is now a suspect in a mysterious comatose girl's assault.
Nancy's birthday dinner with Carson is cut short when Detective Tamura shows up with a warrant to arrest her for contempt of court. Meanwhile, George, Bess and Ace work together to summon up one of their ancestors to help locate Odette's Englishwoman lover Mary's soul amongst billions in the spirit world.
On the evening of Horseshoe Bay’s annual Harvest Carnival, a whole new mystery unfolds for Nancy when the body of a mysterious young man is discovered on the Hudson carnival grounds. The Drew Crew is drawn into the case by a host of confounding clues surrounding a new menace terrorizing the town – a killer who has an enigmatic connection to none other than Nancy’s newest foil: Temperance Hudson.
As The Drew Crew investigates the Frozen Heart murders, sparks fly between Nancy and her counterpart in law enforcement on Nancy's first day as the Community Liaison - and Temperance makes a startling offer at the police station. Meanwhile, Carson and Ryan have conflicting opinions on how Nancy should be parented, a mishap tests Nick's and George's relationship, and Bess tries to protect Ace from a string of bad luck that may not be coincidental.
When life-threatening sleepwalking suddenly spikes in town, the Drew Crew races to protect everyone from the supernatural threat that’s causing these terrifying experiences, and Nancy begins to question whether the case of the Frozen Heart murders has been solved. Meanwhile, Nancy’s unspoken feelings for Ace resurface, and George is shaken by an unwelcome friend request from a surprising source.
The Drew Crew goes on the hunt for an underground prison that may hold answers to the Frozen Hearts killings – all while following a lead on a relic that could cure George of the paranormal affliction that’s shortening her lifespan. Ace tries to enlist Amanda Bobbsey in bringing her father to justice.
Nancy, Bess, Agent Park and Temperance have to join forces when an attempt to trap a killer ends up unintentionally unleashing a deadly supernatural entity that feeds on people’s sorrows. Meanwhile, Ace and Ryan discover a haunting at the Historical Society, and George meets a friend from Nick’s past who may have secrets of her own.
Nancy launches a new investigation to find a group of missing bodies from Horseshoe Bay's cemetery that have been dug up and stolen - or have possibly risen. As Nancy is drawn into this ghostly case, a string of unexplained paranormal crimes leads the Drew Crew to believe that the literal sins of the town's past have returned to haunt the living. Meanwhile, Nancy struggles with yearning for Ace, the man she loves. But when a slow-burning attraction begins between Nancy and the son of Ryan Hudson's newest enemy, Nancy must decide whether this love interest is worth the ire of both her father and Ace - whose own heart may be tempted by a new relationship too.
Ace senses that Nancy is holding back and presses her to give him more information about the curse. Meanwhile, Bess is determined to prepare the perfect meal for Addy's parents, and Nick schedules a brunch date with someone new. Lastly, George's plan to let Judge Abbott know how grateful she is for the opportunity to be his clerk takes a shocking turn.
Nancy runs into an old friend who is in town directing a remake of a horror film called “Longhook,” where strange things are happening on set. She’s hoping that solving a new case will help get her out of her funk, and a worried Ryan offers to help Nancy since he is a self-proclaimed expert on the original version of the film. Meanwhile, Ace helps Bess rehearse for her role as Victim #1 in the movie. Lastly, George and Nick discover that they were both stood up for meetings by councilwoman, Brie, which gives them both an uneasy feeling.