Good Neighbors, Duke
S3:E11
1981
IMDb
While being chased by Rosco, Bo and Luke crash into a piece of land believed not owned by anyone. They soon find out they are wrong, and make friends with the new citizens of Hazzard, the Bensons. But Luke soon finds out that they're being followed by bounty hunters out to get some kind of document which holds a secret to the Bensons' past.