first the disappearance of shane donahue. 600 days without any information. a home in prince williams county is decorated like a christmas wonderland for a family that cherishes this holiday. but the celebration will be muted this year because the boy who used to live there and loved it so much is missing. shane donahue was 23 when he disappeared in march of last year and his family now thinks he s probably dead. still, tonight they are reaching out for help from anyone who might be able to help solve the mystery. gary nurenberg has the story. reporter: the sign changes every day. missing 637 days thursday, 638 friday. he came in and he said love you, mom, i m leaving. i said you don t want dinner. no. we ve got to go. reporter: they got into this truck with a co-worker from an earlier project and disappeared from the face of the earth. hickerson says he dropped shane donahue at a nearby apartment but family members went there, found the lights on, shane s new con