As an engineer, I must say this show's first season started out very promising. Most of the applied mathematics were somewhat plausible, and the relationships portrayed between the Eppes brothers and father gave the show an interesting edge.
But after the first season, the show started degrading, heavily. Most of the mathematics and technology used in crime solving is now utter gibberish and very laughable to all people involved in science & technology for real.
The involvement from the actors still feels okay and I can imagine a fair amount of money is still going into producing each episode, but in the end, this has degraded to a very unpleasantly tasting dish which is a mix of a grade C action thriller and CSI style cop show.
If you are gonna watch it, go for only the first season and possibly parts of the second. Thereafter I would not waste my time. Myself, I gave the show up midway through season 3.
Season 1 - 8 stars Season 2 - 5 stars Season 3 - 3 stars
Let's sum that up to 4 stars. Since Charlie doesn't know his math anymore, I won't bother with the correctness of mine either.