[Swordmaker]

I repeat, unless Laci left a will, Scott is her sole heir. If he is convicted of murder, he is still her heir.

This is not true. In California, a convicted murderer may not inherit anything from his victim.

[RGSpincich]

Here's a little more info on the subject.

link

The title is in both names: Scott's and Laci's.

Generally speaking, in a joint tenancy, when one of the joint tenants dies, the property is divided up to the surviving tenants, said Dewey Weiford, Stanislaus Division president of Stewart Title of California. "However, the surviving joint tenant cannot be the cause of the deceased's death," he said.

Weiford noted that if a death certificate lists the cause of death as unknown or involving violence, the title and sales process is halted and the situation investigated.

Under the state Probate Code, if a joint tenant feloniously and intentionally kills another joint tenant, "the killer has no rights by survivorship."