The third series of the BBC's hit drama Happy Valley reached its conclusion on Sunday night (February 5). The main character, police sergeant Catherine Cawood, played by Sarah Lancashire, was confronted by James Norton's evil escaped prisoner Tommy Lee Royce during an unbearably tense scene that kept viewers on the edge of their seats.
The acclaimed show's third set of episodes came six years after the second series, giving enough time for Catherine's grandson - and Royce's son - Ryan to grow up and begin to make up his own mind about his criminal father. Viewers may be wondering whether they'll have to wait such a long time for Happy Valley to return again - but its writer, Sally Wainwright, has already spoken about the prospect of a fourth season.
Wainwright told the BBC late last year: "I waited six years because I wanted to get to a point where Ryan would be old enough to start making choices about whether he wanted to have a relationship with his dad or not. And could he have a relationship with his dad, and how would Catherine feel about that?
