[Fitzcarraldo]

Karr moves around a lot - does he make use of rental storage facilities? - boxes of memoribilia - maybe there are seemingly innocuous items still in storage or even in his direct possession.

Law Enforcement is going to have to do some world traveling. There could be other murders involved.

[stlnative]

Pedophiles never give up their child porn stash, but I would imagine that his stash is with his laptop (on it or burn on cd) or it is stored electronically on some server on the web.