A List of Publishers for Romantic Suspense and Mystery

1. Avon Books - An imprint of HarperCollins, known for publishing a wide range of romance novels, including romantic suspense and mystery.

2. Harlequin Intrigue - An imprint of Harlequin, known for publishing romantic suspense novels with a focus on action, adventure, and mystery.

3. Berkley - An imprint of Penguin Random House, known for publishing romantic suspense novels with a focus on contemporary and historical settings.

4. Sourcebooks Casablanca - An imprint of Sourcebooks that specializes in publishing romantic suspense and mystery novels, with a focus on diverse and inclusive stories.

5. St. Martin's Press - A publisher that specializes in publishing romantic suspense and mystery novels, with a focus on diverse and inclusive stories.

6. Entangled Publishing - A small press publisher of romance novels, known for their digital-first approach and their focus on diverse and inclusive stories, including romantic suspense and mystery.

7. Tule Publishing - A digital-first publisher of romance novels, known for their focus on heartwarming stories and their emphasis on community and support for emerging writers, including romantic suspense and mystery.

8. Boroughs Publishing Group - A publisher of romance novels, known for their focus on developing new authors and their emphasis on community and support for emerging writers, including romantic suspense and mystery.

9. Lyrical Press - An independent publisher of romance novels, known for their focus on contemporary romance, but also publishing romantic suspense and mystery.

10. Carina Press - An digital-first imprint of Harlequin that specializes in publishing romance novels, with a focus on diverse and inclusive stories, including romantic suspense and mystery, and emerging authors.

Please keep in mind that this list is not exhaustive and there are many other publishers that specialize in publishing romantic suspense and mystery novels. It's also worth noting that some publishers have a specific focus, such as a specific sub-genre, so it's important for writers to research potential publishers before submitting their work to ensure that their work aligns with the publisher's interests.