Someone is lying, someone is in danger, and falling in love is the worst possible timing. Romantic suspense braids a love story through a plot that will not sit still: a stalker, a cold case, a witness who should not trust the one person assigned to protect her. The romance is not a break from the tension. It raises it, because every reveal now costs something.
The test of a good one is whether the mystery would still hold without the romance, and whether the romance would still hold without the mystery. Both have to stand on their own before they are worth braiding. That is why these run longer on suspicion than on action: what you do not know about the other person is the engine, and the moment you trust them is the moment you have the most to lose.
The shapes that recur here: slow burn, because trust is the thing being negotiated; bodyguard romance, where proximity is the job description; hidden identity, when one of them is not who the file says; morally grey heroes whose methods you would not defend out loud; forced proximity in a safe house that stops feeling safe; and revenge for the ones who came in with a plan.
Where to start. Fifty Million Reasons to Lie sets a cold investigator against a charming suspect in a fifty-million-dollar art fraud. Silk and Ashes is the revenge one: she infiltrated his empire to destroy it, and then she started falling. Toxic Temptation locks a doctor on an island with a patient everyone else has written off. The Crimson Profile starts when a package arrives addressed not to the department but to her.
Every novel opens free, no account and no card for the first chapters, so nothing is decided before you have read enough to judge. New chapters weekly, finished novels stay finished, and the browser is the only thing you need.
If you like the danger more personal and the morals greyer, dark romance goes there, and historical romance trades the modern threat for one where a rumour could end a life.