On the trail of the Frozen Hearts Killer, Nancy and her friends follow a surprising lead from a podcaster at an annual convention for amateur sleuths, where they also find themselves unraveling ghostly clues about a homicide from the 1950s.

Sleepwalking suddenly spikes in town and Nancy questions whether Frozen Heart murders has been solved.

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.

While Nancy and her friends race to find the relic that could finally untangle George’s soul from Odette Lamar’s, Carson and Ryan are affected by a mystical substance that prompts a temporary return to the lowered inhibitions of adolescence.

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.

Nick, George and Bess unravel the truth behind a college student's mysterious death, while unexpected obstacles prevent Ace from working with Nancy and Agent Park as they grow closer and investigate the hidden origin of the Frozen Hearts Killer.

A truth-inducing ritual takes hold of a town-wide cocktail party, yielding volcanic emotional confessions and a surprising romantic connection for Nancy.

While serving on a jury, Nick realizes that one of his fellow jurors may be the next target of the Frozen Hearts Killer.

Nancy searches for a missing person targeted by Temperance, who has also placed a fatal hex on the kids of the Youth Center. With the solution to the Frozen Hearts mystery almost in their grasp, a shocking reversal puts the Drew Crew in the crosshairs.

The fate of Horseshoe Bay rests in the hands of the Drew Crew, who must find a way to defeat their most powerful nemesis yet. Lives and hearts are in supernatural jeopardy - and a star-crossed choice will change everything, forever.