Heartbreak Trail — Barbara Keller

SECRET LIVES
When first they meet, Martha Turner knows only that Cole Wingate is a murderer. He knows nothing about her at all. Thrown together by fate, these two strangers, desperate to leave their old lives behind, begin a new one together. Impersonating a young Army officer and his wife, they travel across the great Arizona Territory to arrive at Fort Apache.

Even when night after night of pretending to be husband and wife gives way to the sharing of a rich and glorious passion, real happiness eludes them. Cole's desire to clear his name and exact revenge on those who framed him will drive him to reckless acts. And while Martha's body yearns for Cole's touch, her heart yearns for something quite different -- the reason she has come to Apache country. Somewhere out there is a half-breed child she has sworn to find...the one wrenched from her arms so many years before.