@Trim3 wrote:
There seems to be confusion about this episode. It was Season 2 episode 3. I watched it a year ago. But I see many platforms have listed it as the new Season 3 Episode 3. It might be a country airing order issue.

It is not exactly the same episode. On minute 9, we see a new female chief constable, as opposite to last year male chief constable. And this year McDonald does not ask Dodds to repeat the sound of the boiler.