We enjoyed the production, the filming and actors were excellent though we thought it a bit slow. I became interested in the locations because of a book I was reading that mentioned there had never been a "Great Southern Railway" so the main line railway station with that title was a bit of a mystery. The station building and interior appears to be Kelvinhall Art Gallery in Glasgow, presumably with some CGI to change the name on the building. The opulent "embassy" staircase seems to be Glasgow City Hall, and the "Windsor Castle" ship seen at the docks looks like the ship purchased in 2014 by the Royal Yacht Britannia organisation, so are the docks buildings at Leith?

This is a totally enthralling production. It is very contemporary in its topic dealing with suicide bombers. Considering when the story was originally written, it has a very modern appeal. The story has twists and turns. Jones's character works for both Britain and Russia in his role as The Secret Agent. He involves the innocent in his attempt to follow orders. The ending is very intriguing. Was the Frenchman in on the plot from the beginning? I have to read the book now to find out if the original story follows this script. The acting is excellent. Toby Jones and all the cast give marvelous performances. I would highly recommend this.

The first episode does start out rather slow and it has a lighthearted feel to it. Seeing Toby Jones in this type of role for the first time takes a bit of time to get use to ,but He does come through and gives a great performance. A real stand out performance from Vicky McClure and the rest of the cast give a good performance too. By episode 2 it starts to get dark and much more enjoyable to watch.Episode 3 is really good ,it takes some really dark twists and holds your interest .The music really adds to the feel of it all, as does the great location scenes. I thought it well acted and produced, it leaves you wanting more.

It's a strange and unconvincing story, but it has its points of interest, as it deals with the murky late Victorian world of mysterious anarchists. Unfortunately, this BBC version is not very well done. The main problem is that it is too slow and does not flow. Stephen Graham has a difficult part as Inspector Heat, whose doings and motivations are often obscure. Why he further encumbers this with a heavy Scouse accent is one of the mysteries of the series (I know he's from Liverpool, but he's good at accents). As for Vicky McClure, what is her accent? It's unrelated to the speech of the rest of her screen family and also seems anachronistic to me (too many glottal stops and -d- for -t- in places). Is it that she is just using her own accent (and does she perhaps do so in every part she gets)?