"Hangman's Curse" is a fast-paced and exciting young adult mystery. It's also a fast read. The twins were clever and engaging characters who were willing to stand up for what's right, even if it hurt. The suspense was created by the physical danger to the students from bullying and from the mysterious "hangman's curse." The sleuthing and ending was more TV-style than realistic, but it was good fun.
The twins were home-schooled in a Christian home and they spoke up when students and teachers said things counter to their faith (or were illogical), like that it's alright for people to bully each other because it makes them get stronger...or weeds them out. This speaking up was a critical part of the story as they made friends with the outcast students by being willing to speak up against the accepted line.
There was a very minor amount of "he cussed" style bad language. There was no sex. Overall, I'd recommend this exciting, fun novel.