As a fan of British mystery series, I've become quite particular about what is worth my time. For example, Inspector Morse always makes the cut; Inspector Frost rarely does. Touching Evil so far exceeds the mark that I've bought the tapes. The acting is exceptional--not just Green, but the entire cast perform convincingly and with great subtlety.
This superior cast handles a very tough script exceedingly well. Not only is the plot heavily detailed and nuanced, it's quite hard to watch from a moral point of view (and it must have been even harder to act it). This is absolutely not a criticism. This show deals with some of the ugliest realities of our time. The plot requires the viewer to learn about them. You cannot simply forget what you've seen at the end of the show. In my book, entertainment that also teaches and induces serious thought rises above the usual drivel and makes the discomfort induced by the topics justified.
The look of the series complements the subject matter and the acting, creating a dense and quite specific atmosphere in each scene. Some shots (especially when you least expect it) are quite stunning and even beautiful.
Highly and unreservedly recommended.