If robbery was the motive, then why not do this while they were away from their home? They seem like they were very social people who were away from home alot.
Why kill them execution style?
Gosh SuziQ....if your connection isn't part of this puzzle, it is another great example of why WS's has more interesting information than any Hollywood movie. Those connections are too much of a coincidence to not be connected. Anyone in Missouri with an artifact collection worth over $1 million dollars would probably have a lot of connections to Utah, and other heavily American Indian populated areas of the US.
was anything stolen from the family collection?
Ugh, I hate to see this case handled by an agency inexperienced in handling a murder case.