Nancy and the Drew Crew follow the latest Lucy Sable murder lead, while simultaneously working to uncover the attempted murder of someone in their community. When both investigations lead back to the same person, Nancy and Nick confront the suspect with their findings.

While using a combination of forensic clues, skilled observation and relentless questioning of those who knew Lucy at the end of her life, Nancy unravels what happened the night Lucy died. While her detective work succeeds in some ways, it also reveals a devasting truth.