Adolf Czojor collapsed at a casino when he was 61 years old and his death, which was originally ruled a heart attack, was linked to something much more sinister.

Boyd and Stephanie Householder opened a home for troubled teens in 2006. Despite allegations of abuse they were allowed to remain open for nearly 15 years.

When Steven Beard met beautiful and dynamic Celeste, he had no idea what was in store for him and so many other innocent people.

On August 1st, 2007 over 150 people were on the I-35W bridge in Minneapolis, MN when it collapsed. 13 people died as a result despite authorities knowing from the very start that the bridge was a disaster waiting to happen.

In 1989, 17 year old Tina Isa was looking forward to a very bright future but was betrayed by the people closest to her before she had even graduated high school.

In 2011, 26 year old Michelle Le went to get something out of her car that was parked in the garage of the hospital she was working at and never returned.

When 6-year-old Haley Zega went missing in the Ozark Mountains authorities believed she might have been abducted but the truth of what happened to her was even harder to imagine.

When rising cycling star Moriah Wilson and cycling star Colin Strickland engaged in a brief romance, no one could have suspected the devastation that their casual affair would ignite.

When 70-year-old Kay Mortensen was murdered his son, Roger, and daughter-in-law, Pam, were the ones who called 911 for help. The story they told authorities was so strange it out them at the top of the suspect list.

In 2009, someone broke into the home of Byrd "Bud" and Melanie Billings and shot them in cold blood in front of their nine adopted children.

When 8-year-old Mark Cummings went missing his entire community rushed to try and find him. Despite their hard work and determination it was too late for the young boy who met a monster that day.

When Jessica Lester was 15 years old, she met the grandson of the local sheriff, Matthew Boynton, and her life would never be the same.

When 13-year-old Teri Jo Bradish is found brutally murdered, authorities spend over 20 years trying to find her killer. When DNA evidence finally cracked the case no one was prepared for who was responsible.

In 1992, Katie Rackliff was savagely murdered and mutilated while walking home from a nightclub and no one would ever suspect the person who carried out the attack.

In 1977, Teresita Basa was found nude and murdered in her Chicago apartment and would later "solve" her own murder.

When 22-year-old Summer Holland, her mom, Donna, and her two kids, Dillian and Marissa, are found dead in their home authorities scramble to find out who’s responsible for these horrific murders.

In 1999, best friends Katy Harris and Krystal Surles had a slumber party that only one of them would survive, thanks to the heinous actions of a human monster.

Jimmy McClain was a local basketball legend and the type of guy who would go out of his way to help just about everyone. When he was found murdered, the city of Memphis was stunned. Who would want Jimmy dead and why??

31 year old Morgan Huxley was just starting his life when he encountered the wrong person at the wrong time and would meet an unthinkable end.

When 20-year-old Megan Barroso’s car was found abandoned and riddled with bullet holes authorities rushed to try and learn what happened to the woman. What they would learn would both surprise and horrify all involved.