Did terminal illness prompt Mapleton family killings?

MAPLETON — Detectives investigating the November deaths of a Mapleton family of four are trying to determine if a terminal illness may have been a factor in the tragedy, and whether the incident was planned by the parents, according to court documents.
On Nov. 9, the bodies of Timothy Griffith, 45, his wife, Jessica Griffith, 42, his stepdaughter, Samantha Badel, 16, and his 5-year-old son, Alexandre, and a family dog, were found dead in their Mapleton home, 1502 N. state Route 89. Police