A Little Knowledge

George has a hard time getting the piano he sold to Robin upstairs.

Robin gets a job as a door-to-door encyclopedia salesman, and needs some help.

While the flatmates compete to get the flat to themselves to entertain friends, George is trying to find jobs to avoid Mildred.

Robin, Chrissy, and Jo are cleaning the Ropers' garden. They discover a plant and decide to keep it, that is until Larry identifies it as cannabis...

Chrissy gets some tickets to see Frank Sinatra in concert - she doesn't want them, but Jo and Robin certainly do! Also, it is George and Mildred's anniversary.