When Shelly, Aiden and Katelyn are sat at the kitchen table for dinner, Shelly picks up a bottle of red wine and pours into her glass. The next shot, focusing on Katelyn, Shelly is still heard pouring the wine whilst the bottle of wine still remains on the table.
Shelly has killed Charlie Lynch using her husband's revolver, a Smith & Wesson .38 Special. However, the annoying pathologist tells the detectives the weapon used was a .35 calibre. There is no such revolver calibre, and it is surprising the writer would have made such an elementary mistake.
The London flat from the 1990s features a "Keep Calm and Curry On" poster on the wall, but the poster on which this is based ("Keep calm and carry on") didn't enter the public consciousness until 2005.