Monstret - S1-E6

Revealing mistake: As the RCV enters the gravel field with the bomb, you can see a person in shorts walking casually in the background, despite the area being sealed off.

Add time

I Guds namn - S3-E8

Revealing mistake: After Beck has arrived at the coroner we see Margareta Oberg's body on a table. Looking closely you can see she's still breathing.

Add time