*** SPOILERS ***
So I've finished watching season 1.
Overall feeling: addictive
Consistency: good writing, though towards the last quarter the plots seemed a bit too unbelievable (e.g., shoot a lot of innocent students because you hate one person?)
Favourite moment: the anniversary treasure hunt
Least favourite moment: David getting killed
Biggest question: why not relate the information directly to the FBI, without all the puzzles?