Efren Saldivar (S02E03)

Efren Saldivar admitted to taking the lives of 40 to 50 patients over eight years, earning him the moniker "Angel of Death." He specifically chose individuals who were already on the brink of death. Investigations suggest that his actual body count might reach as high as 200, yet the remains were cremated prior to his confessions, making it difficult to uncover the full extent of his actions during his time in the hospital.