On the day of Adam and Anna's wedding, she won't be there, and he'll lay everything on the line to get her back. With the help of former covert operatives, Adam works to track down Anna's last steps to discover what happened to her, never believing her to be a "runaway bride." But as the truth unravels, and the McGregor family finds themselves under attack—Adam must not only rescue Anna in time but keep his family from danger as well. Find out what happens in the suspenseful follow-up novella to the international bestselling book, On the Edge. On the Line also features scenes from Holly McGregor's perspective.