No chance of any spoilers for this week's episode, Nine Lives Kat, because we haven't seen it yet ourselves.

This is what the BBC advance information says about it.

"Hard-as-nails detective inspector, divorcee and single mum Katrina is determined to crack the case of the missing boy. But there’s also her drinking, her love life and her inner demons. She doesn’t want help, but it turns up anyway."

Sounds like they are doing their take on the the gritty police procedural but needless to say it won't be anything like what we expect. Reece Shearsmith and Steve Pemberton are joined in the cast by Sophie Okonedo (pictured in solo shot), Robin Weaver, Siobhan Redmond and Coco-Lili Hoder.

Shearsmith recently paid tribute to Minder star Dennis Waterman, who he worked with on New Tricks: "RIP Dennis Waterman. When I worked with him on "New Tricks" he made me the best cups of tea. And of course I just spent the time grilling him about "Scars of Dracula"."

The director is Kieron Walsh.

Inside No 9, Nine Lives Kat, Wednesday, May 11, 10pm, BBC Two. And afterwards on catch-up here.

Pictures: BBC/Adam Lawrence