“When’s the last time you had any contact with Tommy Lee Royce?”

So begins the trailer for the explosive Happy Valley finale, and, despite being just 22 seconds long, it 100% proves that good (read: scarily intense) things can come in small packages.

We get a shot of Catherine (Sarah Lancashire) demanding to know whether or not her archnemesis has been apprehended, not to mention a shot of twisted Tommy (James Norton) creeping through a house… with blood on his hands.

Whose house, though? And who is at the centre of the emergency that police are seen rushing off to?

Watch the Happy Valley season 3 finale trailer below:

Happy Valley season 3: the big finale has a trailer, and it reveals blood will be spilled