"WE HAVE YOUR SISTER." Liz Cantrell is terrified when she receives a call from a man holding her newlywed sister captive--and she's convinced her sketchy brother-in-law's involved. Willing to pay any price for her sister's freedom, Liz flies to Niagara Falls with the ransom: an uncut diamond necklace worth millions. But the moment she lands, a handsome, world-weary Immigration and Customs Enforcement agent takes her into custody. Blake Fallon's determined...