Season 1 of I Am a Killer premiered on May 29, 2018.

Season 2 of I Am a Killer premiered on October 22, 2019.

Murderers recount the true stories of their crimes, including a woman who killed her abusive husband and the man behind a deadly New Year's Eve party.

Season 3 of I Am a Killer premiered on August 30, 2022.

While serving hard time for murder, inmates recount their crimes and reflect on how their actions destroyed lives — including their own.

Season 4 of I Am a Killer premiered on December 21, 2022.

Premeditated deeds, tragic accidents or acts of self-defense? Murderers recount the harrowing crimes that landed them in prison with life sentences.