James B. Grinder

James B. Grinder (1945–2010) was an American serial killer and rapist who murdered three teenage girls in Arkansas and a woman in Missouri between 1976 and 1984. Grinder was not apprehended until his confession in March 1998. However, authorities still had little evidence tying Grinder to the murders, so they used a technique known as brain fingerprinting to help prove his guilt. In 1999, Grinder was convicted of the four murders and sentenced to life imprisonment. He remained imprisoned until his death in 2010.

Biography James B. Grinder was born in 1945.

According to Grinder's then girlfriend, he came home at about midnight. He told her about the missing girls and asked her to say that he'd been with her all night if anyone asked. Grinder also gave her $200. About a week after the murders, Grinder returned to the cemetery to cover Williams and Parton's remains with more brush.

Six days after the brain fingerprinting test, Grinder pleaded guilty to Julianne Helton's murder and was sentenced to life in prison. He was then extradited to Arkansas to face trial for the murders of Williams, Parton, and Mabry. He pleaded guilty to those murders as well and was given another life sentence.

In 2010, James B. Grinder died in prison from natural causes.