and then he came to the painful realization that he had been duped. >> the truth about the man i killed, as much as i would like to say i killed for a righteous and solid reason in people's eyes, the truth is i believe i was mistaken. i believe that it was a bitter custody dispute. one of the ladies had manipulated us all and got family and got me to believe that he was molesting his 8-year-old daughter. i would like for that to be true so all this isn't in vain, but the truth is that i just may have been mistaken. and i may have done all this for no reason at all. >> even this twist wasn't the last of the bizarre ironies in brian's life. he testified against the two women who hired him. the two women received life sentences. in return for his testimony, brian got 25 to life and immunity for his father.