Listen: If you have Nathan Lane as a hardboiled detective in a period-appropriate mustache saying "Welcome to homicide" while looking at a gruesome murder scene, I'm going to watch your show. And the first trailer for Penny Dreadful: City of Angels boasts this delightfully grimy image and much, much more. Even if you haven't watched the original Penny Dreadful, the dearly departed Showtime genre series starring Josh Hartnett, Eva Green, and Timothy Dalton, you'll find stuff to enjoy in this spinoff, as it tells a brand new, self-contained story. [caption id="attachment_863502" align="alignright" width="…