The majority of these killers are men in their 30s who kill for financial, professional and relationship stressors

Men who kill multiple family members are known as family annihilators. These criminals kill immediate family members for any number of reasons, whether they want out of a relationship or feel wronged by the person in some way. Often, they feel justified in taking lives, rarely showing remorse or emotions for their crimes. Other men never get their just desserts after committing horrific familicide and go on to marry other women and father more children with them.

Chris Watts

One of the most hated men in America, if not the most, Chris Watts murdered his pregnant wife, Shannan, and their two young daughters, Celeste and Belle, in August 2018. Watts portrayed himself as the grief-stricken husband and father when his family went missing, though never showed any emotion.

Eventually, Chris's story folded, he admitted that he had an affair with a woman named Nicole Kessinger, and he was charged with the murders. He confessed to the murders and took police to their gravesites at his place of employment. He pleaded guilty to nine felony charges and was sentenced to five life sentences. His guilty plea spared him the death penalty.

John List

John List murdered his family and moved on to start another life before he was captured nearly 20 years later.

On November 9, 1971, the 46-year-old accountant murdered his two teenage sons, his teenage daughter, his mother, and his wife inside their Westfield, New Jersey home.

He fled the scene and took on a new identity. He'd planned the murders in advance, already canceling services and telling schools and employers the family was taking an extended vacation. It was nearly one month later before the bodies were discovered.

He left behind a letter saying that he killed his family because of financial problems. He thought his children were immoral and not religious.

He almost got away with the murders.

List was captured after he was featured on a 1989 episode of America's Most Wanted. He was convicted of five counts of first degree murder in 1990 and sentenced to five life sentences. He died in 2008 at the age of 82.

Steven Sueppel

On March 23, 2008, 42-year-old Steven Sueppel beat his wife and four adopted children to death with a baseball bat. It was Easter Sunday. The following morning, Sueppel called police and asked them to come to his home.

After hanging up from the call, Sueppel left in his vehicle and crashed his car into a concrete barrier. He died instantly.

A month earlier, the former banker had been indicted on charges of embezzling more than half a million dollars from an Iowa bank and his former employer where he worked as vice president. He had not made a plea in the case but had admitted to police that he took hundreds of thousands of dollars from his employer over the course of several years.

Christian Longo

Christian Longo murdered his wife, son, and two daughters by strangling them to death. He dumped their bodies in the water near their Newport, Oregon home, then fled to Mexico.

He told police in Mexico his name was Michael Finkle and that he was a journalist with the New York Times.

Police learned that Longo was a con artist who had gotten his family and himself into serious financial trouble by stealing and using credit cards, vehicles, checks, and other financial instruments.

Longo was arrested in Mexico in January 2002 and extradited back to the U.S. He was convicted of the murders and sentenced to death in the state of Oregon.