Into the Flame — Christina Dodd

Roaming the Russian steppes a thousand years ago, a brutal warrior struck a terrifying deal. In exchange for the ability to transform into a heartless predator, he promised his soul-- and the souls of his descendants--to the devil.

Ruggedly handsome cop Doug Black is determined to find the birth family who left him with nothing but a terrifying inheritance: the ability to change into a savage golden cougar. His search leads him to a woman as fearless and exotic as her name. Firebird Wilder is bitterly familiar with supernatural gifts, and flees on discovering Doug's secret, leaving him alone once more. But no one can escape a wild cougar on the hunt. When he finds her, they both must decide which is more powerful: the love that binds them together - or the secrets that threaten to tear them apart.