Showing Killing Time by Linda Howard

In 1985, a time capsule was buried in the front lawn of a small town courthouse, to be reopened in 2085. But just twenty years later, in the middle of the night, the capsule is dug up and its contents stolen. And that same night, one of the contributors to the capsule is brutally slain in his home - with no sign of forced entry or indication of a struggle. One by one, the other time capsule contributors are also being targeted.

Other than the sudden, mysterious appearance of the intriguing Nikita Stover, the local police have absolutely no leads. And while Nikita's no murderer, it's true she has plenty of secrets. With more at stake than anyone else realizes, the smart-talking Nikita is determined to catch this cunning killer while at the same time battling her own deepening feelings for a man and a world in which she doesn't belong.