Operation Phoenix, by Susan Hayes

I enjoyed this Second Chance romance when Nova Task Force commander, Dax Rossi, is sent to take over the investigation of a theft at an isolated planetary base where DNA samples of fallen soldiers are stored in a cryogenic vault and butts heads with an old flame, agent Lieutenant Trinity West, assigned to protect the base.

There’s an intriguing mystery plot, great action, and a really satisfying relationship. Had a blast. Look forward to reading more in the Nova Force series by this author!