De Cock and his team investigate a murder where the key witness is a deaf woman training for a marathon. The culprit is quickly caught, but De Cock has doubts, and discovers that the man has been elaborately set up.
Margreet Felsenthal's corpse is found at the deaf people training institute's parking area, fatally shot while training for a European marathon. The only apparent suspect is her partner of ten years, Jacques Tromp, who lied to get an alibi. Her coach Werner Nieuwenhuijzen, an ex-con doping suspect, maintains he was innocently framed.—KGF Vissers