Maybe this one, if arson, won't be too difficult to solve. How many people are running around town at 1:30 a.m.?
Infinonytune: My City Was Gone, Pretenders
UPDATE: Highly unlikely this was revengeful arson; the kid's mom still doesn't allow him to play with matches. If it were revenge, it would probably have been a planning commission problem or a health certificate suspension or something similar.