Skyfire (The Seven Signs #1), Michael Adams

1. Interesting super simplistic teen book. 
2. Doesn't have a lot of wow or quotable moments - many conversations were teenage oriented and cringeworthy but it still made for an interesting read to solve the mystery of why the signs are being sent to these 7 kids. Interesting concept.
3. Action scenes were so-so.
4. Easy to read in a few hours if focussed. 
5. Probably a 3-3.5/5. I'd still read the rest of the series.