Mesac Damas was born on July 2, 1976, in Haiti. He grew up in an unstable family environment, where he experienced domestic violence and poverty. His early life was shaped by these challenges. Mesac was raised as an Evangelical Christian by both his mother and father until he was about 10 years old. When his parents moved to the United States, Mesac stayed behind in Haiti with extended family members. His relatives practiced Haitian Voodoo, which was different from the faith he was raised in.

At the age of 19, Mesac left Haiti and moved to the United States. He started a new life there and eventually became a chef. He worked in a local ale house and was known to describe himself as "the best of the best" in his profession.

Throughout his life, Mesac remained connected to his Christian beliefs. He became an adult who identified as an Evangelical Christian, despite his early exposure to a different spiritual community.

On September 16, 2009, Mesac Damas had an intense argument with his wife, Guerline Damas, about divorce. The next morning, he followed her to work and confronted her again. After feeling angry and distressed all day, Damas left work after just two hours and bought a knife, duct tape, and other items at a supermarket.

When he returned home, Damas and Guerline argued once more. He then attacked her, binding her with rope and duct tape. Damas later claimed he could not remember many details of what happened next, only describing it as "bad" and "criminal." He said he received help from a "visible spirit" during the crime.

The following day, Damas packed a suitcase and drove to Miami International Airport. On September 19, 2009, Guerline’s family reported her missing, leading police to check on her and the children. Upon entering the Damas home, officers found blood leaking from a door. Inside, they discovered Guerline's body in a bathroom.

Investigators found the bodies of the Damas children and Damas's son, Meshach, on the second floor of the home. Each had suffered fatal injuries.

On September 18, Damas flew to Haiti. Authorities issued a warrant for his arrest four days later. He was apprehended in Haiti and later confessed to the murders. He expressed remorse and claimed bad spirits had influenced him.

Damas was returned to Collier County, Florida, and faced questions about his mental competency. Several evaluations led to him being found competent for trial. In 2017, he pled guilty to six counts of first-degree murder, and a judge sentenced him to death. His sentence was upheld by the Supreme Court in 2019.