Savage Heat — Nan Ryan

SHE WAS THE GENERAL'S GOLDEN-HAIRED DAUGHTER.
Recklessly she danced the night away. Newly arrived at the Denver cavalry post, she was the darling of the regiment... until a shadow fell across her path -- a raven-haired man who made her blood run hot and her heart stop cold. No longer the dazzling debutante; Martay Kidd was suddenly the hostage of a man who would plunder her body, capture her heart, and carry her off into a world beyond her wildest dreams.

HE WAS A PROUD SIOUX CHIEFTAIN.
The white man knew him as James Savin. The Sioux called him Night Sun, the bravest of all warriors. But his true identity was as secret as his plan for revenge on the cavalry officer who'd massacred his family so long ago. His plan was perfect. He'd meant to exchange his beautiful prey for the life of the general himself. But he hadn't planned on spiriting her back to his people, into the Dakota territory, the world he was meant to command. And he hadn't planned to become the captive of his ravishing prisoner, bound to a love that could never be.