here is steve patterson. reporter: an unforgettable homecoming nearly two months in the making it began with a moment of desperation, carol and vern king were vacationing in montana when their 7-year-old border collie katy disappeared. i opened up my motel door and my dog was gone. i was devastated. reporter: for 57 days they went to neighborhoods and deep into the woods using wildlife cameras and night vision goggles, posting flyers everywhere. you love your dog so much and have hope, and you know she s out there searching for you, you can t give up. reporter: carol quit her job as a mail carrier to keep the search going vern returned to their home outside spokane with this note for katie. instead of saying good-bye, i would rather say see you soon. love, dad. then after all seemed lost, a tip.