Old bones, tired memories and odd behavior are highlights as prosecution's case winds down

Prosecutors are close to wrapping up the murder trial of a Rockefeller impostor accused in the 1985 killing of a Southern California man.

The trial that resumes Tuesday mainly rests on circumstantial evidence, the strange behavior of the defendant and a bag of bones.

It's a tough case to prove with no witnesses to the crime, little forensic evidence and no explanation why the German man masquerading as Clark Rockefeller would have killed his landlady's son.

It was chance that provided the biggest break in the case against the suspect, whose real name is Christian Gerhartsreiter.

About a decade after the landlady had died and her son and the suspect had disappeared, the new home owner was digging up the yard for a swimming pool and unearthed the bones of victim John Sohus.