IowaWatch reporter Krista Johnson spent from the end of August 2016 through part of June 2017 researching and writing this report. She interviewed 14 individuals, talking with some several times. She met with Dorothy Varallo-Speckeen three times, read nearly 100 pages of interrogation transcripts, and watched videos of police interrogations of Varallo-Speckeen and Brad Hessel. She reviewed public records of those involved and previous reporting on the case. An early version of this story had a different spelling of Varallo-Speckeen’s last name because it is spelled incorrectly in law enforcement and court records. Varallo-Speckeen’s mother confirmed the correct spelling.