The Gathering

Having watched the TV series first, then some independently-written fan fiction, it was amazing to analyse the stark differences between the show and the book - the why's, what-if's and possibilities had my imagination running the whole time I was reading it: how would Glass have been portrayed if her storyline was cast for the show; how unbelievable would the Wells-Clarke interactions be on the show had they had kept Wells' very simplistic backstory; how gritty and dark would it have been if they kept the Blake's backstory (though perhaps better portrays Bellamy's protectiveness over his sister)...
If I hadn't have watched the show, I probably would have given three (perhaps four because i dont like giving bad reviews) stars - but I have and I can't help but think that the script writers completely transformed this this bland book into the acting that I loved. I will read the other two at some point but that's more because I've already bought them, or I'm interested in what other major plot changes that the script writers improved, than the actual books themselves.