After he suffers a blow to the head at the stables, the main character has a bandage on his forehead, on his right side. But later, when he is shown asleep in bed, the bandage is on his left side, and then immediately after reappears back on his right side.
When Henry is speaking to his wife on his cell phone, a dial tone is heard when she hangs up when there should be silence. Only landlines have a dial tone.