The Union of Shadows paperback

As Lord of the Court of Illusions, Kainen Hemlock is determined to redeem himself after the War of Queens. But having to dodge an arranged marriage wasn't part of the plan.

Reyan Roseglade is determined to keep her head down until she can buy her freedom from service at Kainen's court. But pretending to be his future bride so he doesn't have to marry someone else wasn't what she had in mind.

Then the Holly Queen asks for their help. Reyan agrees to use her shadow-merging gift to investigate a disturbance in the fabric of Faerie, but soon Kainen has his own plans for her future.