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The book revisits the murder conviction of Jo Ann Parks, sentenced to life in prison without parole for allegedly murdering her three young children in 1989by setting fire to her home and trapping them inside. In re-investigating the case, the author found flawed forensic science, false and contradictory testimony, and strong evidence of cognitive bias throughout the case, including use of an unreliable informant who later recanted, and sworn expert testimony that the fire began because Parks supposedly constructed a crude “incendiary device” by deliberately overloading a sabotaged electrical extension cord. Testing later proved the cord did not and could not start a fire. Information in the book has since been added to Parks' existing habeas corpus petition filed by the California Innocence Project, now being considered by the state Supreme Court. Additional findings suggests the problems with flawed forensic science and cognitive bias in general, and in arson investigation in particular, is widespread and has led to other wrongful convictions. Correcting the use of flawed forensic and expert testimony is hindered by the legal system's reliance on precedent, which slows and sometimes prevents the correction of scientifically dubious ideas used to win convictions. Nascent attempts to study and change this tendency to prolong the use of flawed forensic science initiated by the Obama Administration have been shut down by the Trump Administration.