Linger is probably one of the best sequels I have ever read. I think for most authors one of the hardest things to do is to write a wonderful sequel to a wonderful first novel. Ms. Stiefvater, you have done just that.
Let me first say that Sam is HANDS DOWN my dreamboy. (If he is written on the basis of a real person, I might have to stalk this guy until he 1. falls in love with me 2. puts out a restraining order haha) In Linger, I got to see more of Sam's personality, his fears, his pet peeves. I adore everything about him. He's a little mopey at times, but can you honestly blame him? It's hard to be mad that he's slightly depressed when you're feeling the exact same way about his predicament.
One of the newest predicaments would be situation with new werewolf, Cole. I didn't really like him at the beginning of the book and I'm still not sure where I stand at the end of this book. Maybe Forever will show me more of who he is and hopefully I'll see something I like. (He is just way too arrogant I think for my taste.)
Also, this book was written from multiple points of view as opposed to just Sam and Grace in Shiver. For Linger, it is written from the perspectives of Sam, Grace, Cole, and Isabel. It really helped to solidify my understanding of Isabel.
This book is the second in a trilogy and for me, the second book is always the least favorite of the three. Probably because the first one sets up the general story and the third book brings everything to a close. But the second book? It's like filling in the story without closing it off and it doesn't really have a true "beginning" since that was in the first book. However, this book kept me on the edge of my seat throughout the whole thing and the cliffhanger at the end..well..let's just say that I am VERY excited for July 12th, 2011 - when Forever comes out.