Whenever a homeless person speaks to me in the USA, I always assume that I am speaking to a police officer and play along with the suspected charade.
Films in the start you can't really say who will be the killer, who won't be, most times what you say is wrong (Of course if you have watched the film before that and now saying that you haven't it's...
(imp. & p. p.) of Suspect
(a.) Distrusted; doubted.