Matt Hunter leaves his family's Half-Moon Ranch to journey to England to buy a thoroughbred racehorse known as a killer, Dark Champion. By the time he returns to Diablo, Texas, his three siblings are married and his father freed from prison, having completed a ten year prison sentence for murdering his wife.
Widow Juliana Rains returns to her hometown of Diablo seeking to learn how her mother died. In her gut she believes that her stepfather killed her mother, but lacks evidence. Besides finding the proof, she finds Matt.
Juliana has never forgotten Matt nor he her. As they fall in love, her inquiries may prove deadly.