"A person can last 3 minutes without air, 3 days without water, 3 weeks without food. A community begins to die in just seconds."
The most interesting character throughout the story in my opinion is Herb, because as previously stated, he remains a mystery. Adam is the most developed character through the book, because although he is portrayed as slightly innocent in the beginning, he begins to learn things about surviving and then learns to analyze people.
One thing I didn't like about the story was the ending. Even though I'm now aware that the book is first of the series, the story was too abruptly ended without even a cliffhanger to make the readers look forward to the next book. This is probably the reason why I didn't bother finishing the series. Although the story was interesting at first, the excitement just died out near the end.