A Midnight Puzzle by Gigi Pandian

In heroine Tempest Raj, modern-day queen of the locked room mystery Gigi Pandian has created a brilliant homage to the greats of classic detective fiction.

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 could easily build. Tempest refuses to wait for the investigation to turn to her or her loved ones. She knows the pieces of the puzzle are right in front of her, she just has to put them together correctly before more disaster strikes.