To Sin with a Viking by Michelle Willingham

She holds him prisoner. But he’s about to claim her heart…

Caragh O’Brannon never expected to survive a Viking raid—let alone capture a warrior. Fierce, bound, and utterly dangerous, Styr Hardrata should be her enemy. Instead, he awakens forbidden desires she cannot deny.
Styr came to Ireland seeking trade, not a battle. But the fiery Irish maiden who holds him captive stirs a hunger more powerful than freedom itself. Though honor binds him to another, Styr harbors a secret that could change everything.

Caught between loyalty and longing, Caragh and Styr must choose—betray their hearts or surrender to a passion strong enough to defy fate.