Premise: Drifters is a British sitcom that stars Jessica Knappett, Lydia Rose Bewley and Lauren O'Rourke as three female friends who live in Leeds following their graduation from university. All three actresses had previously appeared together in "The Inbetweeners Movie". Four series were broadcast, between 2013 and 2016.
Hypothesis: Because four series were broadcast, the stars of the show received a bonus.