Fixed Term Killers

Marshella Chidester is an American woman convicted in connection with a fatal vehicle incident in Michigan in 2024. The event occurred when she drove into a building during a private gathering, resulting in multiple deaths and injuries. The case gained national attention due to the circumstances of the incident and the loss of young lives. Chidester was later convicted and sentenced to a lengthy prison term.

Nicholas Hartman murdered his wife, Alisa Hartman, in Florida in 2012, beating her to death inside their home. The killing initially presented investigators with a suspicious domestic homicide scene, but evidence ultimately led to Hartman being prosecuted for his wife's death. He was convicted of murder and sentenced to 50 years in prison, bringing the case to a close after the investigation established his responsibility for Alisa's death.

Obdulia Sanchez became the subject of international attention after livestreaming a 2017 DUI crash that killed her 14-year-old sister, Jacqueline Sanchez, in Los Banos, California. Prosecutors alleged Sanchez had been driving under the influence at high speed when she lost control of the vehicle, resulting in Jacqueline's death and serious injuries to another passenger. After serving time in custody and being released, Sanchez was fatally shot in a drive-by shooting in Stockton, California, in December 2025.

Paul Charles Denyer became one of Australia's most infamous serial killers after murdering three young women in Melbourne's bayside suburb of Frankston between June and July 1993. His crimes created widespread fear throughout Victoria, leading to one of the state's largest homicide investigations. Following his arrest, Denyer pleaded guilty to the murders and was sentenced to life imprisonment with a non-parole period. He remains incarcerated and is one of Australia's most notorious convicted serial killers.

Pedro López became one of the deadliest serial killers in modern history after confessing to the murders of hundreds of young girls across Colombia, Ecuador and Peru during the 1970s and 1980s. Nicknamed “The Monster of the Andes,” López terrorized vulnerable communities throughout South America by targeting poor and isolated children, many of whom disappeared without immediate investigation. His crimes shocked the world not only because of the staggering number of alleged victims, but also because López appeared calm and cooperative while confessing to investigators. Despite claiming responsibility for hundreds of murders, he ultimately served a relatively short prison sentence before disappearing after his release, creating ongoing fear and controversy surrounding his whereabouts and possible later crimes.

Richard Benjamin Speck became one of America's most infamous mass murderers after murdering eight student nurses during a single night in Chicago, Illinois, on July 13–14, 1966. The attack at a South Side townhouse generated worldwide attention and became one of the most notorious crimes in American history. Speck was convicted of eight counts of murder and sentenced to death, although his sentence was later commuted to imprisonment following changes to U.S. capital punishment laws. He died in prison in 1991.

Robert Black Farmer became one of Australia’s most notorious child killers after the 2008 murder of 18-year-old Lauren Huxley on the Gold Coast, Queensland. Prosecutors alleged Farmer abducted Lauren as she walked home from a night out before sexually assaulting and murdering her, triggering one of the largest and most publicized homicide investigations in Queensland history. The case generated national outrage because of Lauren’s age, the predatory nature of the attack, and the extensive manhunt that followed. Investigators later uncovered forensic evidence linking Farmer to the crime, while media coverage focused heavily on his criminal history and escalating pattern of sexual offending. The murder remains one of the most infamous stranger-abduction killings in modern Australian criminal history.

Roy Lewis Norris became one of America's most infamous serial killers after murdering five teenage girls alongside accomplice Lawrence Bittaker during a five-month killing spree across Southern California in 1979. Working together in a customized van known as the "Murder Mac," the pair abducted vulnerable teenage girls before murdering them and disposing of their bodies in remote locations. After his arrest, Norris agreed to testify against Bittaker in exchange for avoiding the death penalty and was sentenced to life imprisonment without the possibility of parole.