Gene kicks open Sam's door to find him handcuffed to the bed after being caught in the honey trap. Later though, when he visits Sam again, the door is undamaged with no sign of repair or fresh paint.
The position of Hunt's hands on the bar after putting the television on it.
When Joni is talking to Sam at the police station, her right sleeve is folded up in shots facing her but hanging correctly in shots over her shoulder.
Sam and Annie discuss going to the cinema and Annie says they should see Carry on Girls which was released in November 1973. However, the episode takes place in March 1973 as the police are doing a sweepstake for the Grand National (Red Rum, Crisp & Proud Percy are mentioned).
When Hunt and Tyler are in the refrigerated cold store with Warren's henchman there is no cold air vapour on anyone's breath.
When Sam approaches his parents' house, the door is clearly already several inches ajar. Yet when Sam rings the doorbell and his mother opens the door, it is accompanied by the sound of a latch clicking.
Sam advises Marc Bolan, the lead singer of T. Rex, to drive carefully (referring to the fact that Bolan would die four years later in a car accident). Bolan never drove a car or learned to drive, he was a passenger in the car that crashed.