The music, some of the editing and language are all wrong. This is a historical piece but the music and sound statements are thoroughly modern and therefore out of place and time. The same can be said for the modern quick jump editing in some of the scenes. These are completely at home in a modern drama but only distract in this period piece. Language is another problem. Would someone in the 1850s really say "it doesn't look like there was any forced entry"? I think not. This is a modern Law & Order appropriate statement that does not fit. These inconsistencies don't ruin the series for me, they just make it harder to concentrate and enjoy the story.
Review of Underground
