. >> then forensics investigator larry claytor took over. >> the one thing that jumped out there that was out of place was a 5 gallon bucket sitting right in the middle of the living room floor with an empty bottle of rubbing alcohol. >> an empty bottle of rubbing alcohol. >> right. it didn't look like it belonged there. >> upstairs scattered near ann's body, he found three aerosol cans. quite probably also accelerants. all of that liquid kindling for murder. >> there was a blob of melted plastic consistent with a smoke detector melted and laying on the floor. and then there was a battery. a nine-volt battery that looked like it would go to a smoke detector in the sink. >> somebody had taken it out of the smoke detector. >> that's what it appeared to be someone had removed it. >> so cruel and deliberate. all the more shocking in a town where murder is exceedingly rare. said detective phil giles. >> it's not a common occurrence of homicide. >> how did it hit you and members of the department? >> you have a victim and then a child. the child, of course, that always touches you in a diff