Serial killings

Michael Gargiulo listens as the death penalty is announced during the sentencing phase of his trial in Los Angeles Superior Court for the killings of two women and the attempted murder of a third, on Friday, Oct. 18, 2019. (Mario Tama/Pool Photo via AP)

In this Thursday, Oct. 10, 2019 photo, Tonya Maslar holds an old photograph of her mother Roberta Tandarich taken before her death in 1991 in Ravenna, Ohio. Tandarich's body was found dumped at Firestone Metro Park in 1991. A sketch of Tandarich drawn by serial killer Samuel Little, who claims Tandarich was one of his many victims, lies in the background. (Jeff Lange/Akron Beacon Journal via AP)

FILE - In this March 4, 2013, file photo, Samuel Little appears at Superior Court in Los Angeles. Little, pronounced by the FBI the most prolific serial killer in U.S. history, has confessed to more than 90 slayings committed across the country between 1970 and 2005. (AP Photo/Damian Dovarganes, File)

FILE - In this Monday, Nov. 26, 2018 file photo, Samuel Little, who often went by the name Samuel McDowell, leaves the Ector County Courthouse after attending a pre-trial hearing in Odessa, Texas. The Federal Bureau of Investigation says Little, who claims to have killed more than 90 women across the country, is the most prolific serial killer in U.S. history. In a news release on Sunday, Oct. 6, 2019 the FBI said Samuel Little confessed to 93 murders. Federal crime analysts believe all of his confessions are credible, and officials have been able to verify 50 confessions so far. (Mark Rogers/Odessa American via AP, File)

Deangelo Martin is displayed on a monitor during his video arraignment at 36th District Court, Wednesday, Sept. 18, 2019, in Detroit. Martin is charged with four counts of first-degree murder and four counts of felony murder in the killings of four women whose bodies were found in abandoned houses in the city as far back as February 2018. Martin, who was arrested in June, was already charged in the stabbing and sexual assault of 26-year-old woman in May and the kidnapping and assault of a 51-year-old woman in June. (Clarence Tabb, Jr./Detroit News via AP)

In this undated photo provided by the Florida Department of Corrections, Gary Ray Bowles is shown. Bowles, a serial killer who preyed on older gay men during an eight-month spree in 1994 that left six dead, was executed by lethal injection Thursday, Aug. 22, 2019, at Florida State prison. (Florida Department of Corrections via AP)

In this undated photo provided by the Florida Department of Corrections, Gary Ray Bowles is shown. Bowles is scheduled to be executed by lethal injection at Florida State Prison on Thursday, Aug. 22, 2019, for the murder of Walter Hinton in Jacksonville Beach in November 1994. (Florida Department of Corrections via AP)

Michael Gargiulo, left, and his attorney Daniel Nardoni confer as Gargiulo's guilty verdicts on all counts are read in Los Angeles Superior Court Thursday, Aug. 15, 2019. A jury found Gargiulo guilty of fatally stabbing two women and attempting to kill a third in their Southern California homes. Gargiulo, is also awaiting trial for a similar killing in Illinois in 1993. (Al Seib/Los Angeles Times via AP, Pool)