A gang of six wealthy, well-dressed and well-spoken hoodlums break into a married couple's house and rape the wife while forcing the husband to watch. Thus begins a dogged investigation by a determined detective who quickly finds that their cult-like solidarity can be a serious obstacle to breaking them.
An Englishman in Holland gets involved in a murder case. It looks bad for him, but the wily Inspector Van Der Valk isn't convinced of his guilt.