Check out this review and more at On the Wings of Books 
 What I Thought... 
 * I try to follow the book before movie/tv show, but sometimes I give in, and I definitely gave in to The 100. I'm not a huge space person, but EVERYONE was talking about the tv show so I thought, why not? I watched it, enjoyed it, so I thought I would give the book a shot. 
 * Other than the fact that the tv show has 100 juvenile delinquents being dropped from space it is vastly different from the book. I thought that the first season would basically be book one, it is far from it. 
 * Because I watched the show I pictured the characters like that, which was fine expect for Octavia, who is 14 in the book and so not 14 in the show. 
 * The tv show is basically the entire first book crammed into the pilot and then widely veers from there, which was a bit disappointing for me as I really liked some of those elements. (view spoiler)[In the tv show Clarke's mom is alive but her dad is dead, in the book both of her parents are dead. Wells is alive in the book, not in the tv show. These are pretty big differences! (hide spoiler)] 
 * Despite the fact that I like the tv show better there were some aspects of the book that were better. Glass was supposed to be on the ship to earth but escaped and is still on the spaceship and I liked how we got to know whats going on the space ship through her eyes, and to be honest she was my favorite narrator. 
 * There are four narrators and I'm glad I was listening to it on audio because at times I had a hard time telling the difference between them, but at least I could narrow it down to two as there were two different narrators for the audio. The flashbacks also made it confusing at times. 
 * There was less action than I anticipated, given that I thought there would be more a resemblance to the tv show. There were still so many interesting things going on though, especially their rediscovery of earth. 
 Overall I enjoyed The 100, but not as much as the tv show.