Convicted murderer involved in suspected sexual misconduct with psychiatric clinic staff
Janet S., a Kampen woman serving TBS (compulsory mental health treatment) for the 2014 murder of Amersfoort businessman Ton Kuijff, was involved in a serious breach of protocol at the Van der Hoevenkliniek in Utrecht when a staff member was found in her room, De Sentor reported. The discovery occurred during a routine morning check and was caught on clinic cameras. Review of security footage showed that the employee had spent at least ten weekends in Janet’s room.
The exact nature of their interactions is unclear. Clinic records note, “Was there a (sexual) relationship? It certainly appears that way, although Janet denies it.” The employee was immediately dismissed, and Janet was moved to a different department.
Janet S. was convicted and sentenced to 13.5 years in prison plus TBS for killing Kuijff in a chalet in Ermelo using a knife and an axe. Prosecutors described the attack: “The victim was literally slashed in the throat.”
The staff member had voluntarily spent multiple weekends confined with Janet. During one morning round, another employee heard noises from her room. When asked if anyone was present, Janet denied it. A search revealed the staff member hiding in the shower.
Janet attempted to cover up the crime she was eventually covicted for by repainting blood-stained walls and setting the chalet on fire. Kuijff’s body was wrapped in a tarp and discovered by firefighters. She had met Kuijff through a dating site and had a history of targeting men she met online for extortion. Janet’s criminal history also includes a 2004 conviction for letting a man bleed to death in The Hague after an alleged sexual advance. Psychological reports describe her with antisocial traits, borderline tendencies, and psychopathic characteristics.
Concerns about Janet’s behavior continue. Staff suspect she may have a mobile phone, which is prohibited, though no phone has been found. Janet requested a transfer to TBS clinic Veldzicht in Balkbrug, which operates under a lighter regime allowing more family contact. The request was denied, partly because of her recent incidents with staff.
In February, a court extended her TBS by two years, citing an “unacceptably high” risk of reoffending. Janet acknowledged to the court, “I have my ups and downs.” Despite the extension, she has recently been granted limited supervised leave outside the clinic, called “transmural leave,” to practice independence. She will participate in five supervised sessions.
“The family of Ton Kuijff find it strange and premature that she is now granted more freedoms,” said lawyer Chris Sent, representing the victim’s relatives. A Ministry of Justice spokesperson declined to comment on individual cases. Clinic spokeswoman Sandra Eigeman said, “We cannot provide details due to medical confidentiality.”
