Precise Oaths by Paige E. Ewing

Even though spider-kin Liliana sees the past, the future and into men's souls, she can still be surprised. After all, no one wakes up wondering if they'll be accused of murder by a werewolf.

Wolf-kin Peter Teague of Fort Bragg's Criminal Investigation Division analyzes the venom in six dead soldiers. The victims were killed by a spider-kin, and Liliana is the only spider-kin in Fayetteville.

Pete's handsome boss, the dangerous fae Colonel Bennet, watches Liliana with burning ember eyes, but refuses to call his investigator off.

It's up to Liliana to keep Pete from executing her and convince the skeptical scientist she's not the murderer, all while keeping her new friend from getting eaten by the real killers.

And if that's not enough, she might even have to socialize!