You can only assume they decided to confront the, er, generously proportioned mammal in the room. ITV launches a new police procedural starring the star of an old police procedural. Said star is a sizeable Scot with an old Toby jug of a face and, oh sod it, let’s just admit we’ve cast him because of the baggage. Yes, Cracker is back. OK, not Cracker, nor even Fitz, but a lived-in Glaswegian high-rise of a man who cracks murder cases on primetime, pausing only for the commercial breaks. It’s almost as if the young witness already knows all about Robbie Coltrane. “I’ve seen you before,” she says in the incident room. “Yeah?” he drawls. “I’ve been in the papers a few times.”

Miss Marple is frequently described as “a little old lady”, but for all that she casts a giant shadow. Just ask any new actress invited to portray this most beloved of characters. When you play the spinster sleuth, you have massive shoes to fill. That has certainly been Julia McKenzie’s experience