I love this show! I watch out for up and coming technological breakthroughs in medicine and tech through a few different sources, and a lot of this is plausible. It'll be years before we ever see the tech because of testing and trials, but it's nice to see what different possiblities there could be.
It's refreshing to see a new concept of a British period crime genre. This is the first new idea for a show in a long time. The way the characters interact is amazing. I've rewatched every episode and I have to say if you're not paying attention towards the end you'd miss the subtle glimpse of the paranormal, that is most often a quick don't blink or you'll miss it, that leaves the storyline open. Or during the show almost all of the details match up, yet there are some details that cannot be explained. Awesome show and I love when shows make you rethink what you thought you knew. No more remaking shows or turning movies into shows. New ideas are where it's at.