On the first night at the cabin, Peter puts a dark green blanket over Hardenberg. In the morning, when they all wake, Hardenberg is covered with a completely different blanket.
The length of Jan's cigarette when painting Jule's apartment changes between when he is sitting talking to Jule and when he begins painting again.
When showing the photo of the Mediterranean Island they plan to sabotage, the photo is shown in Portrait orientation when seen from the back and in Landscape orientation when seen from the front.
When Jan, Jule, and Peter are having their first major discussion with Hardenberg at the cabin, Jan's cigarette is almost finished, but half-way through the scene he suddenly has a full cigarette again between cuts.
In one of the scenes Jan ends up in a pool fully clothed. Moment later he is walking around, more damp than wet. And in addition, he should have squelched loudly in his wet shoes. But you don't hear that.
The Mercedes that Jule keys in the parking garage is also used as Hardenberg's Mercedes when he arrives at his house right before catching Jule and Jan. You can see this by matching the license plate to each scene.
When Jan and Peter are driving with their van. You can see in the back window of the van a camera man with his camera.
After the first scene at Jan's and Peter's apartment, a cameraman with his camera (red light) is reflected in the Volkswagen bus when they are backing up from their parking place into the street. In the following scenes, every time we see the VW's rear, the curtains are closed in order to hide the cameraman seen before.
Despite Jan, Peter and Jule all standing on the top deck of the yacht when cruising out of the harbor, a person can be seen in the cabin of the yacht in a side shot.
When making the phone call in the village, part of the camera is reflected in the door.
When Jan shuts the sliding door after searching his van for Jule's cellular phone, the cameraman is reflected in the window.