Modus Operandi - Stabbing

The Zodiac Killer is an unidentified serial killer who operated in Northern California during the late 1960s and early 1970s. He is linked to multiple murders and attacks, primarily targeting young couples in secluded areas. The case became widely known due to the killer’s cryptic letters and ciphers sent to newspapers, in which he claimed responsibility and taunted law enforcement. Despite extensive investigation, his identity remains unknown, making him one of the most infamous unsolved serial killers in history.

Leslie Louise Van Houten was a member of Charles Manson's Family who participated in the murders of Leno and Rosemary LaBianca during the second night of the infamous Manson Family killings in August 1969. Under Manson's direction, she joined Charles "Tex" Watson and Patricia Krenwinkel in attacking the LaBiancas inside their Los Feliz home. Van Houten was convicted of two counts of first-degree murder and conspiracy to commit murder after multiple trials and originally sentenced to death before California's death penalty was invalidated. She spent more than five decades in prison before being released on parole in 2023 after numerous successful parole recommendations and legal challenges.

Patricia Dianne Krenwinkel was one of Charles Manson's most devoted followers and participated directly in the Tate-LaBianca murders that left seven people dead over two nights in August 1969. At the Tate residence, she chased and repeatedly stabbed Abigail Folger, and the following night participated in the murders of Leno and Rosemary LaBianca, later using their blood to write messages at the crime scene. Krenwinkel was convicted in 1971 of seven counts of first-degree murder and conspiracy to commit murder and sentenced to death, which was reduced to life imprisonment after California temporarily abolished capital punishment. She has spent more than five decades in custody, becoming California's longest-serving female prisoner. Although parole boards have repeatedly found her suitable for release in recent years, Governor Gavin Newsom most recently reversed a parole grant in October 2025, finding that she continued to pose an unreasonable danger to society.

Susan Denise Atkins was one of Charles Manson's earliest and most devoted followers and participated directly in the Tate-LaBianca murders that left seven people dead over two nights in August 1969. At the Tate residence, Atkins helped restrain the victims, fatally stabbed actress Sharon Tate and wrote the word "Pig" on the front door using Tate's blood. She also participated in the murders of Leno and Rosemary LaBianca the following night. Convicted in 1971 of seven counts of first-degree murder and conspiracy to commit murder, Atkins was initially sentenced to death before her punishment was reduced to life imprisonment after California temporarily abolished capital punishment. She remained incarcerated until her death from brain cancer in 2009.

Charles "Tex" Watson was one of Charles Manson's most prominent followers and the principal attacker during the Tate-LaBianca murders that left seven people dead over two nights in August 1969. Acting under Manson's direction, Watson led Patricia Krenwinkel, Susan Atkins and Linda Kasabian to the Tate residence, where five people were murdered, before participating with Krenwinkel and Leslie Van Houten in the killings of Leno and Rosemary LaBianca the following night. Watson fled to Texas but was extradited to California and tried separately from Manson and the other defendants. He was convicted of seven counts of first-degree murder and conspiracy to commit murder in 1971 and sentenced to death, later reduced to life imprisonment after California invalidated its death penalty. He has repeatedly been denied parole and remains incarcerated.

Charles Manson was an American cult leader and criminal who orchestrated a series of murders in California in 1969 through members of his group, known as the Manson Family. Although he did not personally carry out the killings, he directed and influenced his followers to commit them. Manson became one of the most infamous figures in criminal history due to his ability to manipulate others into violence. His case remains a defining example of psychological control, group influence, and orchestrated multiple homicide.

Ivan Milat was an Australian serial killer responsible for the murders of multiple backpackers in New South Wales between 1989 and 1992. His crimes became one of the most notorious cases in Australian criminal history. Milat targeted travellers and used deception to gain their trust before carrying out violent attacks. He was later convicted and sentenced to life imprisonment without parole, remaining incarcerated until his death in 2019.

Richard Ramirez, known as the “Night Stalker,” was an American serial killer who carried out a series of murders and attacks across California between 1984 and 1985. His crimes were marked by unpredictability, extreme violence, and a lack of a consistent victim profile. Ramirez created widespread fear due to the random nature of his attacks and his ability to evade capture for an extended period. He was later convicted of multiple murders and sentenced to death, becoming one of the most infamous serial killers in U.S. history.