This Time by Amy Reece

Nina Braden’s twin brother is dead, and her childhood crush is back in her life.

Sexy firefighter Seamus DeLuca was Neal’s best friend. He and Nina shared a forbidden kiss at seventeen, but life has kept them apart.
Her brother’s death brings them together, close enough to tempt them both. But something is…off about the way Neal died, and neither she nor Seamus can let it go. The police say it’s suicide, but there’s an encrypted video in his financial documents, and his fiancée is acting strangely…

Nina feels like there’s a clue just outside her grasp that will make the mystery of her twin’s death fall into place. But the mystery of her own heart may be harder to solve…