sedated his 23-year-old patient, Candice, and raped her. While Versed — the anesthetic he used — has strong amnesiac effect, Candice was still able to remember the rape. She reported the crime to the police.
Schneeberger's blood sample was, however, found not to match the samples of the alleged rapist's semen, thus clearing him of suspicion. In 1993, at the victim's request, the test was repeated, but the result was negative, as well. In 1994, the case was closed.
Candice, still convinced that her reminiscences were true, hired Larry O'Brien, a private detective, to investigate the case. He broke into Schneeberger's car and obtained another DNA sample, which, this time, matched the semen on victim's panties and pants. As a result, a third official test was organized. The obtained blood sample was, however, found to be too small and of too poor quality to be useful for analysis.
In 1997, Lisa Schneeberger found out that her husband had repeatedly drugged and raped her 15-year-old daughter from her first marriage. She reported him to the police, which ordered a fourth DNA test. This time, multiple samples were taken: blood, mouth swab, and hair follicle. All three matched the rapist's semen.
During his 1999 trial, Schneeberger revealed the method he used to foil the DNA tests. He implanted a 15 cm Penrose drain filled with another man's blood and anticoagulants in his arm. During tests, he tricked the laboratory technician to obtain blood sample from the place the tube was planted.
He was found guilty of sexual assault, of administering a noxious substance, and of obstruction of justice, and received a six-year prison sentence.
The College of Physicians and Surgeons of Saskatchewan stripped Schneeberger of his medical license and his wife divorced him.
In 2003, Schneeberger was released on parole, after serving four years in prison. He was stripped of his Canadian citizenship on the basis of not mentioning the police investigation against him in his citizenship application, and deported to South Africa in 2004. He moved to Durban to live with his mother.