The Spy’s Solstice by Merri Bright

Sometimes stabbing is the only solution.
When apprentice spy Ratter stabs a handsy duke at a royal ball, she knows her crime is unforgivable.
Not the murdering. The getting caught.
Facing exile from the city she loves, she’ll need to make sure a few people are taken care of. That may even include a suspiciously handsome spy from Pict, who apparently holds a grudge.
Sure, she poisoned him, but she was protecting a dangerous secret that could destroy everyone who depends on her.
When the tall, dark, and hot-as-hell spy finds out Ratter’s secrets anyway, she may have to take care of one last loose end.
But can she kill the Alpha who gave her a red-hot first Solstice kiss?