The Substance, on iPlayer. Demi Moore as an ageing babe who comes to regret making a deal with the devil. Blimey. Sort of holds it together for the first hour or so, then goes completely to pieces. And not in a good way. How did this manage to get 7.4 on IMDb? Couldn't but bring to mind one of 'the' television ambushes - Dennis Pennis's "Are there any circumstances, if it wasn't gratuitous and it was tastefully done, would you consider keeping your clothes on in a movie?""