Two unforgettable sisters discover heartfelt passions as powerful and compelling as ice and fire in this enthralling novel by the beloved New York Times bestselling author. Demure beauty Houston Chandler and independent, hot-tempered Blair are twins. While dreaming of practicing medicine, Blair falls in love with her placid sister’s fiancé, a doctor. Blair’s impetuous spirit has won her a medical degree in a man’s world—and captured Lee Westfield’s heart. But even as the couple’s ardor grows, there are nights when Lee disappears only to return exhausted, haunted. While his silence imperils their love—the truth would imperil her life.