DEA agent Sara Hanrahan goes undercover in her hometown. Deputy Nathan Roswell isn't sure what Sara is up to, but one thing is certainshe makes his pulse race. But just as he opens his heart to her, Sara's case explodes, putting his love and hers on the line. Roxanne Rustand pens a winner with OPERATION: MISTLETOE (4). An interesting twist is how the murder mystery from Sara's past entwines within her current DEA assignment.