13 Steps Down

Mix Cellini has an obsession with John Reginald Christie, The Rillington Place killer, his state of mind begins to spiral out of control as his obsession with model Nerissa grows.

This seems to be the last of Ruth Rendell's books to be dramatised, which is a real shame, she penned some terrific books.

This is very different to many of her works, it's much darker, bleaker, and ultimately nastier than most of what she's written.

Cellini is a very good character, his mental collapse is well played out, Treadaway is fantastic, he's so impressive, arguably steals the show ahead of Geraldine James and Gemma Jones.

Let's have more Ruth Rendell please, 8/10.