Continuity mistake: In the scene on the bridge when Frank's girlfriend gets pulled over, the cop on the driver side has his gun drawn. It changes between angles. From the outside it's a standard issue 38. From the inside looking out it's a .357 magnum.
Continuity mistake: When Lymangood is running away from the car he crashes in to a bike and his hands and arms are free, not tied at all.
Character mistake: Following Lymangood's death, police dispatch radios a BOLO on Murphy, identifying his vehicle as a 1979 Trans Am. However Murphy drives a Turbo Trans Am, only available in 1980 and 1981. Dispatch should have all of his data available.