Brixton Brothers it Happened on a Train is a fun and exciting adventure. If you've read Brixton Brothers one and two you know that Steve Brixton and Dana are super sleuths. The whole series of these books are full of action, humor, and adventure. The genre of this book is mystery. My favorite part of brixton brothers is when Steve and Dana were stowaways in a car. I recommend these books to everyone because they are super fun too read.