Actually, if the landscaper lied about the murder for hire plot, that is slanderous. Whether it is actionable slander against the landscaper depends on Oregon law. Even if it is actionable, two very important questions remain: (1) Can the plaintiff afford to pay a lawyer, or will a lawyer take the case on contingency (based on his opinion of the law, as applied to the case), and (2) if the plaintiff wins, will the damages hoped for be sufficient to be worth both the plaintiff's and the lawyer's time, and does the landscaper have the money or assets to pay those damages?
People who say they believe the story, or opine that it is true, have not committed slander. People believe all sorts of things that are untrue or which cannot be proved. Therefore, in that context, beliefs are opinions.
For example: Some people believe in ghosts. My son was astonished that all of the kids he knows at his high school hold this belief. He does not believe in ghosts and thinks it is silly to do so. All the kids, including my son, have opinions about ghosts, since neither side can prove the truth of the matter they assert. This is very similar to the situation in which we find ourselves when we discuss Kyron's disappearance.
Another example: Some people believe that the moon landing by American astronauts was a hoax perpetrated by the government. They can believe it all they want to, but their beliefs are opinions they hold despite mounds of evidence to the contrary.
Exactly, if it's a lie.
Some people on WS keep saying that Terri can sue for slander (words) or libel (written).
My point is that she would have to prove that it's a lie.
Therein lies the difficulty, IMO.