Richard wears his jacket alternately opened and closed.
The necklace of Sophie disappears a few times.
Both guns of Temmink and Snijder are alternately visible in their holsters.
During the (car)chase, Richard and Annette try to flee the parking garage. The sign '2' which marks the floor, passes by multiple times, which reveals that both cars are driving around in circles.
When Inspector de Vries reads an old newspaper article, the subtext below the headline is a copy-pasted paragraph about oil drilling.
When Annette and Peter walk down the beach, you can briefly see the sound operator aiming the microphone above them.
When Sophie knocks over the cradle, a helping hand is shown down left.
The bus drives Sophie from the west of The Hague through the centre to the east in less than 1 minute. In reality, the distance to travel between all locations takes over 30 km.
Between the official days of filming in the summer and the unexpected re-shoots during winter, Anouk van der Steen had her hair cut and required extensions. Also, her sunny skin became more pale, which was apparent in the new scenes where she wore a bikini.