Throughout the movie the license plate of John's car changes varying in numbers and letters.
The motorcycles are VERY loud in every scene, but they approach the house silently.
At the start of the film we see Lara enter the restaurant yet there's no blood on the back of her coat. This is supposed to take place after the murder of her boss in the car park yet a little later on in the film before Lara is arrested there's suddenly a blood smear.
The Prius' tail light can be seen intact several times after the scene where it got damaged.
At the very beginning of the movie, John's watch is on his left wrist. He checks the time, then checks the wall clock, then starts a timer on his watch (still on the left wrist). You can also see the watch on the left wrist throughout this process when seen from a wider angle. After just a few moments of him watching through the window, he rubs his forehead with his right hand and the watch is on the right wrist.
Allegheny County Jail is inexplicably, erroneously described as "the largest jail in the world". In reality it only houses approximately 2,000 inmates. By comparison, The Twin Towers Correctional Facility in downtown Los Angeles is the world's largest known jail facility. It has 1.2 million square feet and houses almost 4,500 inmates.
Allegheny County Jail does not allow inmates to have contact visits.
Lara is held in the Allegheny County jail for three years after her conviction. Convicted murderers are not held in county jails in PA. She would have only been there temporarily for a pending hearing in Allegheny County Court. Shortly after her conviction, she would have been transferred into the custody of the PA Department of Corrections and transported to the State Correctional Institution at Muncy on the other side of the state for classification to either SCI Muncy or SCI Cambridge Springs.
Each time John passes successfully through the metal detector, he emerges with his watch still on his arm.
When John is researching books about prison, the International Standard Book Number shown for Damon Pennington's book has 12 digits. Real ISBNs have either 10 or 13 digits, not 12.
Lara is smiling in her forged passport photo, which should have been noticed and rejected by the customs agent. Only neutral expressions are allowed in passport photos. (This is not entirely correct. A lot of US passport holders smile in their photos so it's pretty common.)
You don't go through Customs to leave a country as they do in the Toronto Airport scene. This should have been done at the USA/Canadian border in Buffalo/Erie.
In flashback scene of mugging that killed Lara's boss, mugger hits boss in arm she brought up to protect her face instead of face with fire extinguisher.
The northern routes north from Pittsburgh to Pennsylvania/NY line are not toll roads. In NY, US 20 runs directly from PA to Buffalo without toll booths.
In the aerial shot of the taxi at the end you can see it is driving on the left side of the road. In Venezuela they drive on the right-hand side.
When John and Lara bypass the zoo exit they continue on the Highland Park Bridge. Shortly after, after the car avoids a truck and spins out of control, they come to a stop. As they exit the vehicle, you can clearly see Chestnut Ridge mountain in the background putting them on toll Route 43 outside of Uniontown, PA. This is over an hour-and-a-half from the Pittsburgh zoo.
The envelope with the labwork shows the Allegheny County Jail's address as "3256 2nd Street". There is no such address in the city of Pittsburgh. The jail is actually located at 950 2nd Avenue.
The zip code 15909 is in Johnstown, PA, not Pittsburgh.
When the detective says "get the warrant", the only admissible evidence they have to even suspect John is that his wife owns a car that uses the same tail lens as was found in a trash pile up the street from the meth lab. No judge would issue a warrant on that, and certainly not in the time frame shown.
When offering to take her grandson to a folk festival, John's mother mispronounces the name of the city, Kutztown, which is in eastern Pennsylvania and quite a long drive from Pittsburgh. Pennsylvania residents would be well aware of the correct pronunciation. The U in Kutztown has the same sound as the OO in "book."