Secret Staircase Construction is under attack, and Tempest Raj feels helpless. After former client Julian Rhodes tried to kill his wife, he blamed her "accident" on the home renovation company’s craftsmanship. Now the family business --- known for bringing magic into homes through hidden doors, floating staircases and architectural puzzle walls --- is at a breaking point. No amount of Scottish and Indian meals from her grandfather can distract Tempest from the truth: they’re being framed. When Tempest receives an urgent midnight phone call from Julian, she decides to meet him at the historic Whispering Creek Theater --- only to find his dead body, a sword through his chest. After a blade appears from thin air to claim another victim, Tempest is certain they’re dealing with a booby trap...something Secret Staircase Construction easily could build.

Secret Staircase Construction just finished their first project with Tempest Raj officially a part of the team --- a classic mystery novel-themed home interior. Their client is now ready to celebrate her new life without her cheating ex-husband, famous mystery author Corbin Colt. First up, a party, and Tempest and Grandpa Ash are invited to the exclusive mock séance to remove any trace of Corbin from the property --- for good. It's all lighthearted fun until Corbin's dead body crashes the party. The only possible suspects are the eight people around the séance table --- a circle of clasped hands that wasn't broken. Suspicion quickly falls on Grandpa Ash, the only one with actual blood on him. To prove her beloved grandfather’s innocence, Tempest must figure out what really happened.

After a disastrous accident derails Tempest Raj’s career, and life, she heads back to her childhood home in California. Though she resists, every day brings her closer to the inevitable: working for her father’s company. Secret Staircase Construction specializes in bringing the magic of childhood to all by transforming clients’ homes with sliding bookcases, intricate locks, backyard treehouses and hidden reading nooks. When Tempest visits her dad’s latest renovation project, her former stage double is discovered dead inside a wall that’s supposedly been sealed for more than a century. Fearing she was the intended victim, it’s up to Tempest to solve this seemingly impossible crime.