The English Beauty and the Highland Beast by Kenna Kendrick

He was a pawn in her game, yet in the end, he conquered her heart…

Everyone thinks Errol MacKinnon has died fighting against the English. In truth, he’s locked away in Sir Wemyss’ dungeon with no hope for freedom. So, when an alluring lass offers him a way to escape, he’d be a fool to refuse.
The catch? He has to take her with him.
Edina Wemyss has a mission to accomplish. Free a prisoner from Errol’s family castle without being caught, or face the death of her sisters at the hands of their ruthless father. Left with no choice, Edina pulls Errol into her web of deceit, which ties their hearts closer too.
So close that her plan becomes unbearable…
As Errol’s tender caresses draw near her heart, Edina realizes she can’t go on and break both their hearts by betraying his clan. A sin she can never atone for in his eyes. But leaving her sisters to suffer their father’s wrath is not an option either…
Their love was not a spark but a wildfire burning their hearts to ashes…