Wait Inside The Red Booth. Nightlock Sins, #15

"There are rooms built for keeping and rooms built for holding. The difference is whether the door locks from the inside."Elodie Ames is a meticulous forensic accountant who lives for the certainty of numbers. But her predictable world shatters when she witnesses a brutal murder in the back hallway of a subterranean jazz club. Hidden behind a heavy burgundy velvet curtain, her life is saved by Ronin, an enigmatic and dangerous fixer who forces her into hiding.
Whisked away to a secret, unlisted floor of a luxury hotel, Elodie discovers a terrifying truth: her sanctuary was prepared specifically for her. From her favorite coffee to her exact brand of shampoo, the suite is a gilded cage tailored to her every habit and secret. Ronin hasn't just saved her by chance; he has been watching her for weeks. As Elodie uses her brilliant analytical skills to trace a massive casino money-laundering conspiracy tied to the corrupt detective hunting her, she must also unravel the ultimate puzzle-the obsessive man protecting her.
Bound by a shared tragic past and the destruction of their families by the same corrupt system, the tension between Elodie and Ronin ignites into a dangerous, consuming attraction. Trapped in an environment built on surveillance and control, Elodie must decide if the locked door between them is meant to keep a deadly world out, or trap her inside.