Anja 'Lotus' Langeweg is murdered in her own SM dungeon, apparently strangled but actually her skull is smashed. The embarrassment, and the fact she secretly photographed clients, gives them a motive, as well as her prudish sister and house-mate Heleen. Her regular or occasional clients included the neighbor Hein de Waal, female chess celebrity Borowsky and Heleen's blind boy-friend, remarkably self-reliant Jeroen Speelman, who lost his eyesight trough sustained parental abuse. De Cock and Vledder not only find no or doubtful alibis, but a trap proves an additional motive.
—KGF Vissers