Despite warnings from her friends that he is only a fortune hunter, beautiful heiress Laura Coles marries Donald Cameron. Fighting her fear, Laura agrees to settle at bleak Cameron Castle, her husband's ancestral home.

But there is no welcome for Laura in that brooding mansion. Donald's relatives treat her as an intruder. Donald suddenly becomes cold and withdrawn. Laura's fear turns to horror when an attack is made on her life by a man who resembles her husband!