This is a weird one, and a bit of a disappointment after the excellent if flawed first Mistborn trilogy. A lot of this book feels like a rehash of the first trilogy but with much of the more interesting elements (Vin as a character, the compelling friendships and romance, and the setting) stripped out and made less distinctive. Sanderson's skill at dialogue still comes through sometimes, but oddly not often and the story lacks the usual build up of twists toward a satisfying climax - Instead it all just falls a bit flat.

More than anything, it is strange that Sanderson went for telling essentially a more straightforward superhero story, more specifically a Batman story, and then restricts the actual discussion of vigilantism to the same tired old "am I the problem, should I stand back and let the police handle things, am I doing this for the right reasons?" fretting that anyone interested in these stories read and got bored of years ago.