2nd in a Series Activity Challenge

I'm a huge series fan.  What about you guys?  In honor of this Activity Challenge's giveaway, I created a collage including 8 covers, all 2nd books in a series.   Can you guess the titles? Fill out the form below and do the best you can.  Complete the puzzles below to see the prize!  (HINT: I recently finished reading it and LOVED it!)

Be sure to fill out the Google Form by Friday, April 23rd to be eligible for the giveaway.