'Family Affair' was a popular situation comedy and a regular top 20 hit show produced by Don Fedderson Productions for CBS-TV during its five-year run from 1966-71.
The twins make friends with a boy who does not have any parents and has run away from an orphanage. They hid him in the apartment, moving him from room to room, so the others do not find him.
S4E9 25 min
