(at around 1h 6 mins) The jewels that Milo puts onto Andrew disappear after Milo tells Andrew that it is just a game.
(at around 20 mins) When Andrew is explaining how Milo can break into the house, a security monitor shows the ladder against the side of the house. Moments earlier, the same ladder was shown to be on its side on the ground.
To clean his face, Tindle pours lots of alcohol on his face, so his t-shirt gets wet. In the following shot, his t-shirt is dry.
(at around 9 mins) When Andrew and Milo are sitting at either end of the long table enjoying a drink, the position of the bottle changes.
(at around 1h 19 mins) When Andrew and Milo are in the guest bedroom and Maggie calls, the phone is not picked up and the illuminated blue display fades once the call ends. In the next shot, the display is illuminated again.
Despite not firing a bullet, blank cartridges are still dangerous causing severe injury at close range and have been known to kill at up to six feet.
(at around 1h 6 mins) When Milo drinks from a vodka bottle, the liquid in the bottle gurgles as he lowers it from his mouth. He then smashes a glass across the room and inverts the bottle as he bows. No liquid falls from the bottle as expected.