This has one of the better twists I've read in a murder mystery. It also follows a pattern of mysteries written in the 1890s where the person who catches the culprit explains all the clues the others have missed and how he got to the solution. It's a little different from a Poirot or Holmes story in that the reader really isn't given a chance to put the clues together. The guilty party is presented and then the explanation begins.

The story purposefully gets lost in a few characters and their roles in the labor movement that is gaining steam. And the characters seem to focus on one or two guilty parties. There's even a false reveal.

If you like classical mysteries, this is a good one for you.