Haunted in Death and Eternity in Death

Haunted in Death:

Lieutenant Eve Dallas doesn't believe in ghosts. But when a very recent corpse shows up, alongside the bones of missing singer Bobbie Bray, everyone is spooked. Did Bibbie's ghost finally get her revenge or is there a more earthly explanation?

Eternity in Death:

When notorious it-girl Tiara Kent is found dead in her plush Manhattan apartment, the murder looks like a vampire attack - everyone but the practical Lieutenant Eve Dallas. Discovering Tara's secret lover, Eve and her team are led on a chase into the darkest corners of the city and deep into their own fears.