Okay, so this is a weirdly specific crossover I never thought I'd see, but I totally get the appeal. You're basically looking for the intersection of crime/thriller and the dominant/submissive dynamic, right? Where the power play isn't just in the bedroom but is central to the actual plot—like a game of cat and mouse with literal, life-or-death stakes.
I found my way into this niche after reading 'The Witness' by Nora Roberts, which isn't explicitly BDSM but has that intense protector/vulnerable person dynamic that feels adjacent. It made me crave something darker and more intentional. For pure, undiluted dominitrix energy in a suspense frame, you really have to dig into the indie romance and erotic thriller corners of Amazon Kindle Unlimited. Authors like CD Reiss and Kylie Scott sometimes play in this sandbox, but their work often leans more toward the billionaire/mafia romance with dominant heroes.
For a true dominitrix, where the woman holds the power in both the relationship and the dangerous situation, it's tougher. I stumbled upon 'Her Russian Protector' by B.B. Hamel, which flips the script a bit—the female lead is dominant, but the suspense comes from the mafia world he's in. It's not perfect, but the tension is there. Honestly, most of what I've found that truly fits is in serialized fiction apps like Radish or Dreame. The tags 'Dark Romance' and 'Suspense' paired together often yield stories where the female lead is a detective, a vigilante, or someone with secrets, who also happens to be the one calling the shots in the intimate relationship. The writing quality varies wildly, but the thrill of the hunt is part of the fun.
My biggest gripe is that a lot of mainstream erotic suspense still defaults to the male lead being the dominant force, both in the streets and between the sheets. I want more stories where she's the one with the plan, the weapon, and the leash.