The Starlost (1973)

S5E11 Edwards Family vs Trade Unionists

In the third quarter-final, a father, his son, and daughter-in-law face off against three representatives from an executive council trade union. The challenge involves uncovering links among seemingly unrelated items, including Little Venice, silver, Christopher Columbus, and the Equator. As they engage in this intellectual duel, the teams must rely on their wits to make connections that initially appear completely random.