An Heir to Thorns and Steel is an interesting book, though it suffers from being a prelude to a series and from an obvious lack of editing*.
The setting is original, clashing (very american) post-revolutionary politics and fairy tales through Victorian gothic novels and quite a bit of anime. Not an usual mix. The plot, though, as the main character makes sure we know, is pretty folktale-ish. A traditional fantasy, in which our hero is a lost prince, heir to a kingdom of unimaginable magics and, of course, incredible corruption. If you’ve read a few of those, you know how they go.
Morgan, though, is an interesting, complex character. That is a mixed blessing, as it mostly shows how the secondary characters are simple sketches, lacking the rich inner life he projects. This lack of complexity, of course, might be explained by he author’s unexpected** use of first person point of view. Reading the character’s pain in first person is pretty effective as means to make the readers care, but it also robs us from plenty of details, like descriptions of places and people, as well as moods and inner thoughts of secondary characters, which would have been far more interesting in the long run.
Asides from the main character, there’s not much to go on. The antagonists are evil for evil’s sake, the setting is a world of two territories that don’t seem to be aware of each other (to the point of elves being relegated to legend among humans), despite the fact that there’s commerce between them and that the general technology level seems to be on par with 18th century Europe.
In sum, an interesting premise, though it lacks polishing.
* Which is common in self-published books and shall not be brought up again.
** Usually, secondary world fantasy stories take a third person approach, not only to allow for multiple points of view, but also to be able to describe the scenery and setting without sounding like meditation.