Only one is still scheduled for execution: Christa Pike.

She also is scheduled to become the first woman executed in Tennessee in more than 200 years.

“She has fallen within this perfect storm (of teenage killers),” said Randy Spivey, an attorney in the Tennessee Office of the Post Conviction Defender. “Others got a benefit that she never did.”

Pike was three months before her 19th birthday when she bludgeoned Colleen Slemmer to death in Knoxville on Jan. 12, 1995. Pike is scheduled to be executed Sept. 30, barring clemency by Gov. Bill Lee.

Death Penalty Information Center stats show Pike also is the only person, out of more than 3,100 people convicted of first-degree homicide in Tennessee since the death penalty was reinstated in 1977, scheduled to be executed.

Pike’s lawyers say this shows bias.

The average age of condemned men at the time of their crimes in Tennessee was 29. The youngest were 23 when they committed their crimes − Robert Coe (1979), Cecil Johnson (1980), David Miller (1981), Nicholas Sutton (1985) and Stephen West (1986).

Their age at time of offense was not the reason each was granted a reprieve from death row. Each case featured a legal maneuvers to vacate the death sentence, including ineffective counsel, mental health concerns and procedural errors.

“Tennessee courts and juries seem to understand what we knew about brain science − that an 18-year-old is not a 23-year-old,” Spivey said. “One by one, they all came off death row.”

All except Pike.

Spivey and Kelly Gleason, another Post-Conviction Defender attorney, said Pike has raised all the same issues as the others sentenced to die for crimes committed as teens.

Gleason said Pike was told by her first attorney not to take a plea bargain in which she would have avoided the death penalty because, the attorney told Pike, “she would never be executed because she was a pretty young girl.”

The state has not disputed Pike suffers from serious mental health concerns, including a childhood of trauma in which she was abused by family members and raped three times. The third rape occurred less than a year before Pike killed Slemmer.

Experts have testified Pike suffers from post traumatic stress disorder and bi-polar disorder.

“It strains belief that we’re where we are today,” Spivey said.

Two rulings by the United States Supreme Court set precedent for handling murder cases involving teenagers. The Roper v. Simmons case in 2005 made it unconstitutional to execute convicted murderers who were younger than 18 at the time of their crimes. Pike missed that cutoff by nine months.

“Seventeen is an arbitrary number,” Spivey said.

Miller v. Alabama banned mandatory life-without-parole sentences for juvenile offenders, citing the “mitigating qualities of youth.”