Someone with access to the family's home hired a taxi so that he (presumably it was a male) could rifle through the personal files of the father. This occurred the Monday morning following the Sunday disappearance.
A friend of the son gave one or more peculiar interviews over the years. That friend possessed a key to the house. At the time, he lived in the community of Cascade Locks. The friend may have received the pistol from the son. There is a suggestion that the friend had inappropriate contact with the oldest daughter.
There may have been a planned meeting which led the family to The Dalles on the morning of the disappearance. There is a report that the family car sped from restaurant at The Dalles back west (about forty miles) to Cascade Locks. There is a report that two men, possibly the car thieves at the restaurant, were seen standing next to the family car parked at Cascade Locks.