DEADLINE by MIRA GRANT
Audiobook
Not to toot my own horn, but TOOT! I figured out the ending as soon as Kelly said what she did to escape. Also, the SPOILER!! [ George] haunting is just strange.
And last but not least my prognostication radar has went off and I'll share what I think the next book will show, which I've thought since book one SPOILER!!! [Rick has a bad buy from the beginning and he's part of this new outbreak]. I may be wrong though.