A brilliant engineer, Jilly Stiles has been educated since childhood to help run her father's dynasty. Now with the company safe after the marriages of her two sisters, Jilly can focus on her dream of building a mountaintop railroad—and never marry.

Nick Ryder came into Jilly's life when he saved her mother from her no-good stepfather, and he's prepared to protect Jilly from anything that threatens to harm her. Haunted by the pain of his own past, Nick is determined not to get his heart involved while protecting Jilly from losing her hard-won independence.

But when a cruel and powerful man goes to dangerous lengths to make Jilly his own, marrying Nick may be the only way to save herself and her dreams.