Vledder assumes his latest girl friend Sandra just imagined seeing, trough a telescope, across the street a woman being stabbed to death. In the morning, no corpse is found in that apartment, but later prostitute Daniela Verhagen is found floating dead in a canal, with matching wounds. The apartment is rented by a computer firm and uses at will by its married managers, Jelle de Vries, Bas Weijning and Gerard van Putten.
—KGF Vissers