Withdrawal - S2-E1
Factual error: When Neil figures out how much the bank robbers took they say that each of the 4 robbers are carrying 2 briefcases which means they have 8 in total. If you multiply the $960,000 in each case by 8 you get $7,680,000 which is $520,000 off the $8,200,000 the robbers supposedly got away with, not the $1,500,000 Peter says the difference is. (00:41:45)
Point Blank - S2-E9
Factual error: In the scene where Mozzy is using a synthesizer to try and figure out the musical code, he starts playing random chords in frustration. Since the synthesizer is a Minimoog (a monophonic instrument) this is impossible. (00:12:45)
Power Play - S2-E15
Factual error: In this episode they mention the heat wave affecting NY, but when Neal talks to Sara he asks her how Argentina was and she says it was hot. But if it's Summer in NY (Northern hemisphere) it should be Winter in Argentina (Southern hemisphere).
Factual error: Neil and Mozzi are trying to date an image of the Chrysler building painting. In the process Neil tells Mozzi to scratch off a bit of titanium white paint from the Rembrandt. Titanium white wasn't discovered and made available for artists until 1921.
Factual error: Mozzy plugs a laptop into a PBX switch in what can be assumed to be a server room. Somehow, this remarkably grants immediate access to security cameras and elevator controls without so much as an internal IP address or any administrator login access. This is ridiculously erroneous as no security camera or elevator control would even be accessible from a PBX data line, as these are only able to pass voice/phone data and nothing more. (00:27:40)