Phantom Shadows
Dr. Melanie Lipton is no stranger to the supernatural. She knows immortals better than they know themselves, right down to their stubborn little genes. So although a handsome rogue immortal seems suspicious to her colleagues, Sebastien Newcombe intrigues Melanie. His history is checkered, his scars are impressive, and his ideas are daring. But it's not his ideas that have Melanie fighting off surges of desire...
Bastien is used to being the bad guy. In fact, he can't remember the last time he had an ally he could trust. But Melanie is different — and under her calm, professional exterior he senses a passion beyond anything in his centuries of experience. Giving in to temptation is out of the question — he can't put her in danger. But she isn't asking him...
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Dianne Duvall
When Dianne Duvall writes, she doesn't just build worlds—she bridges them. One moment, you're steeped in a centuries-old battle between immortals and vampires; the next, you're racing through the stars with alien warriors and psychic empaths. It’s that seamless fusion of paranormal suspense, time travel, and sci-fi romance that’s made her a staple on the New York Times and USA Today bestseller lists—and a favorite for readers who crave adrenaline-laced love stories with depth.
Immortal Guardians
Immortal Guardians consists of seven primary books, and includes two additional books that complement the series but are not considered mandatory reads. The current recommended reading order for the series is provided below.

