I was fortunate to pick up this program on my "free on-demand" cable program. I found it gritty and so different from the usual police drama with a cookie cutter plot.
Beginning with a Jack the Ripper copycat was a stroke of genius. The twists and turns kept me interested and involved in the drama. Two issues were going on: The new, obsessive-compulsive boss takes over and the detectives don't like it one bit. Plus the killings keep them on their feet and the focus is on thinking their way through the crime book of Jack the Ripper. Wonderful drama! I also like the character of the "ripperologist" who helps them out. I love the quirky personalities of the people involved and how they have to work together to find the real killer. Also a big surprise.
The second part about the Krays was a bit less interesting. I mean, how can you follow up after Jack the Ripper? But the drama was still there. I see that there will be another season in 2012. I sincerely hope they keep up the good work of tying in the historical element.
They could even have a copycat Henry the VIII! That would be very cool indeed.