Conceptually this is almost identical to the excellent Mindhunter. I don't know if this is a wild coincidence or a blatant copy but it's actually very good. It's the usual pitch. Brilliant FBI agent invents new ways of discovering the identity of the Unabomber and is met with scepticism by his superiors would believe in procedure, even though their methods haven't led to an arrest in 17 years. Even though this could be a rip off it's well worth a look.