Research the Terra Ikerd/Ralph Takemire Crime Case

 Here is a timeline of the real murder case read here

Books about the case

Nature Forensics and the Struggle to Pinpoint Time of Death by By Jessica Snyder Sachs

Journey Into Darkness by John E. Douglas and Mark Olshaker

Adoption crisis: the truth behind adoption and foster care (a very interesting read)

Time of de-th: the story of forensic science and the search for de-th's stopwatch by Jessica Synder Sachs

Ladies' Home Journal Volume 11: Robbing the Cradle. (I think this is the article that got the attention of the producers who decided to make a movie about it.