[2][3] Following the success of The Dark House, several other Noort novels were optioned for adaptations which included the Dinner Club.
Karen, a freelance translator, and Michel, an IT professional, are moving with their daughter Sophie to an affluent residential neighboorhood.
While doing some shopping Karen encounters Simon, later, when she picks up her child from school she meets her neighbour Hanneke and the two become fast friends.
Next morning, Hanneke shows off interior designs she has made for Angela and Kees she has stored on her whale-shaped USB-stick.
Subsequently, Hanneke complains about her friends avoiding Evert and then gives Karen her very own USB-stick in the style of her own as a present.
In the aftermath, Hanneke is inconsolable over his death and doesn't buy the suicide part, she walks away and disappears.
Karen visits the hotel room where Hanneke stayed and is found by Detective Dorien who gives her a contact card.
Michel doesn't believe her and tells her Hanneke died and the police detective finds the evidence insufficient.
As a result, Karen investigates Babette's room and finds incrementing evidence and medicine in the urn.
She confronts Angela about the evidence and wants to give to the police but Karen is seized by Simon and is taken to a construction site.
Following the success of The Dark House, Saskia Noort other novels were being optioned for film adaptation including The Dinner Club.