Naked In Death: A troubled detective. A ruthless killer. Kindle Edition

Mainstream published book free for kindle. Very popular series

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Info added by @Sashecuador

Eve Dallas is a New York police lieutenant hunting for a ruthless killer. Named by the social worker who found her when she was a mere child roaming that city's streets, Eve lives for her job. In over ten years on the force, she's seen it all - and knows her survival depends on her instincts. And she's going against every warning telling her not to trust the charismatic Irish billionaire, Roarke - a suspect in her latest murder investigation.

But sometimes you have to make your own rules, and Eve must decide whether to take a chance on a man she knows nothing about...