This was just...okay. The mystery was actually decent, but the characters were flat and lacked depth. And as I mentioned in an earlier update, that while this is the first book in the series, there were allusions to past cases Cassie helped out on, which left me a bit bewildered at times. I felt that I was starting the series in the middle.
It's also not really steampunk at all. There's a few mentions of steam powered things, but it doesn't seem to be a huge part of the world building.