Happy Valley fans have been heavily invested in the final series of the popular crime drama, turning armchair detectives as they tried to work out what twists and turns would be coming. But as the finale came to an explosive end that pleased most, some pointed out a major flaw.
What were the police not watching the one house killer Tommy Lee Royce was going to be drawn to and why did it take them so long to get there when the alarm was raised?
Tommy used a brick to break in through a basement window at the front of Catherine's Hebden Bridge home, in full view of the street. Catherine and her family had been warned not to go near the house, not even to collect any valuables.
