Line Pillet appeared in both the Belgian and English versions of Professor T. Koen De Bouw played the lead role in the Belgian version.
The Danish and German teams use different laptop brands (Vaio) from the Belgian team (HP).
At 22.25, Fifi is seen getting into a car wearing knee high stiletto boots which are similar ones to the knee length version dominatrix @scotsdee wears in her clips and photos on her Twitter account.
At 23.25 Jackie can be seen wearing a black bra panties and hold ups similar to the ones financial dominatrix @xjennyc9x wears in clips and photos on her Twitter page.
Director Kathrine Windfeld died 23 days before this episode was screened.