Nightfall

Aiden Afflack is as charming as he is gorgeous. Unless you're a rogue vampire, in which case he's apt to be the last thing you see. Sam Shea is a wildly successful nature photographer whose prescient dreams lead her to awe-inspiring weather phenomena.
When their paths cross and Aiden discovers that his proximity to Sam warps her psychic power, causing her to hone in on vampire violence instead of violent weather, he knows he's found a priceless tool in his fight to rid the world of rogues.
Sam has a deep-rooted aversion to having her powers exploited, but once her eyes have been opened to the lives she can help save, she can't withhold her cooperation. But she can deny Aiden the other thing he wants from her, which makes her unique among women. And absolutely irresistible to Aiden!