Grijpstra and De Gier investigate the murder on American jazz singer Val Collidge. Nora Savior, Grijpstra's favorite singer, may be related to the case. Grijpstra celebrates his 25th anniversary at the police station.

Jelte Rosier is contacted by a man who tells him he is about to be assassinated, and that he can help him. Grijpstra doesn't take it very seriously when Rosier reports it at the police station, but Cardozo discovers that the mysterious man is a known criminal. When bringing the man home, Cardozo sees two women kissing in a car, one of which he thinks is Rosier's wife. To solve the case, Hetty must go undercover, to De Gier's dismay.

While De Gier is eating at a Surinamish toko restaurant owned by some friends, a man and women come in and threaten the owners. Later, the father of the family is found murdered. Grijpstra has won a caravan and tries to sell it.

Grijpstra and De Gier investigate the murder on an underworld banker. When they arrest one of the suspects, the man is shot from a moving car. De Gier is distracted by the return of his estranged father.

Grijpstra gets into trouble after hitting a young boy who tossed fireworks at a stray dog befriended by him. Meanwhile, he and De Gier investigate a gruesome murder in a retirement community. The culprit may be in an adjacent hard-rock café.

While in hypnotic therapy, Karin Mijbrecht remembers that she was raped by her father as a child. Grijpstra and De Gier are unsure about the reliability of her memories, and discover clues pointing in a different direction at a hospital where she was treated. Cardozo has followed a course on efficient management and spends the day annoying his colleagues.

Grijpstra and De Gier investigate the murder on a Buddhist monk. Possible suspects include a junkie, a rivaling monk and a butcher who blames the monk for the death of his daughter.

Grijpstra is devastated when his aunt is murdered, and quickly becomes too involved in the case. Further problems arise when his long-lost son may have been the culprit, and two other detectives come to the police station questioning him about obstructing the investigation.

Apparently investigating on his own, Cardozo is shot by a criminal and ends up in the hospital in critical condition. Grijpstra and De Gier try to find the shooter. Cardozo's girlfriend blames Grijpstra for the incident- he was always putting Cardozo down, and Cardozo wanted to prove that he was a capable police investigator. De Gier and Hetty finally get together.