If you enjoyed The Tractate Middoth from a few years back, I'm pretty sure that you'll enjoy this one also. This is arguably the best of the modern episodes, it's certainly my favourite of the four.
It tells the intriguing story of Williams, a man keen to learn his family's past, and more interestingly, has come into the possession of a strange picture, The Mezzotint.
I've watched a lot of horrors and chillers this year, some good, some poor, most of them around the ninety minute mark, what impressed me about this, was how they managed to not be derailed by the short running time, considering it's only thirty minutes long, it packed a punch, atmospheric and sinister, with a chilling conclusion.
It looks great, it feels well made, some fine acting, Rory Kinnear was terrific, and played it straight, I did love seeing Frances Barber here, Mrs Ambrigail was super cooky.
Thoroughly enjoyable, 8/10.