With a killer on the loose, it's the worst time to be on lockdown…

It's just another day at the office for Washington Metro Police lieutenant Sam Holland when a body surfaces off the shores of the Anacostia River. But before Sam can sink her teeth into the new case, Secret Service agents seize her from the crime scene. A threat has been made against her family, but nobody will tell her anything—including the whereabouts of her husband, Vice President Nick Cappuano.

This isn't the first time the couple's lives have been at risk, but when a bombshell from Sam's past returns to haunt her, she can't help but wonder if there's a connection. With a ruthless killer out for vengeance, and Nick struggling to maintain his reputation after secrets from his own past are revealed, Sam works to tie the threat to a murder that can't possibly be a coincidence. And she has to get it done before her husband's career is irrevocably damaged…