Motivations - Revenge

Sarah Buzzard was convicted of the aggravated murder of 21-year-old Ryan Zimmerman, whose dismembered remains were discovered in Mercer County, Ohio, in January 2016. Zimmerman had moved from Kentucky to Columbus in 2015 and was living with Buzzard, her then-husband and Buzzard's friend Naira Jen Whitaker. Investigators determined that Zimmerman was killed inside the Columbus apartment in September 2015. Buzzard later confessed to strangling him and dismembering his body, telling investigators that she was angry with Zimmerman and believed he had contributed to the breakdown of her marriage. Whitaker was identified as an accomplice but died by suicide when police attempted to arrest her in 2021. Buzzard pleaded guilty to aggravated murder in December 2021 and was sentenced to life in prison with the possibility of parole after 30 years.

Lawrence “Larry” Dilione was involved in the killing of 26-year-old Joseph “Joey” Comunale after an after-party at James Rackover’s Apartment 4C on East 59th Street in Manhattan on November 13, 2016. Comunale was repeatedly stabbed during a violent confrontation involving Dilione and Rackover. Afterward, the men attempted to conceal the killing by moving, burning and burying Comunale’s body in a shallow grave in Oceanport, New Jersey. Dilione was originally charged with murder but pleaded guilty to first-degree manslaughter in January 2019 and was sentenced to 23 years in prison.

Dale Bradley Jr. was convicted of killing 22-year-old Kennecott security guard Bryan Ruff in Utah in December 1991. Ruff, who was having an affair with Bradley's first wife, Kristi, disappeared from his guard post during a night shift and was found nearly 19 months later in a shallow grave near Five Mile Pass. Investigators eventually linked Bradley to the killing through physical evidence and witness testimony. Bradley originally faced a first-degree murder charge but entered an Alford plea to manslaughter and kidnapping in 2007 and received two consecutive prison terms of two to 20 years. In 2025, while seeking parole, Bradley finally admitted that he shot Ruff, saying anger and jealousy had overtaken him.

Elizabeth Anne "Betty" Broderick was convicted of murdering her ex-husband, Daniel T. Broderick III, and his new wife, Linda Kolkena Broderick, in San Diego, California, on November 5, 1989. After years of an increasingly bitter marriage, divorce and custody dispute, Betty entered the couple's home using a key she had obtained from one of her children and fired five shots from a .38-caliber revolver, killing both while they slept. She surrendered to police later that day. After her first trial ended in a hung jury, Broderick was convicted of two counts of second-degree murder at a second trial in 1991 and sentenced to 32 years to life imprisonment. She died in custody on May 8, 2026, aged 78.

Mark Daniel Gooch murdered 27-year-old Mennonite teacher Sasha Krause in January 2020 after travelling from Arizona to the Mennonite community where she lived near Farmington, New Mexico. Krause disappeared on January 18 while retrieving materials for a Sunday school class, and her body was discovered more than a month later in the Coconino National Forest near Flagstaff, Arizona. She had been shot in the head and her wrists were bound. Gooch, who had been raised in the Mennonite faith but later rejected it, was convicted of first-degree murder and kidnapping in October 2021 and sentenced to natural life imprisonment plus five years for kidnapping in January 2022.

Lindsey Robert Rose is an Australian serial killer who murdered five people in New South Wales between 1984 and 1994. His victims included acquaintances and vulnerable individuals who were killed over a ten-year period before advances in forensic science and renewed investigations linked Rose to the crimes. Following his conviction, he was sentenced to five terms of life imprisonment without the possibility of parole and remains incarcerated.

Christopher Monks Jr. became the subject of a high-profile criminal case after conspiring to murder his adoptive parents in Kent, England, in 2009. The plot involved recruiting an online acquaintance, Shaun Skarnes, to carry out the killings while his parents slept. The attack failed when Christopher Monks Sr. awoke and disarmed the intruder before police were called. Monks was convicted of conspiracy to murder and made subject to an indefinite hospital order.

Shane Devon Tamura became the perpetrator of one of New York City's deadliest shootings in decades after opening fire inside a Midtown Manhattan office tower on July 28, 2025. The attack killed four people and injured several others before Tamura died by suicide. Investigators concluded that he had intended to target the National Football League (NFL) headquarters housed within the building and found writings indicating grievances related to chronic traumatic encephalopathy (CTE), although the full motive remains under investigation.