It's interesting that a number of people here see a "believable," "earnest," even "charming" Barry Morphew here. I can't say that I see the same. I see a man trying out a number of stories, some of which do not make a lot of sense. Also, it's worth noting that the man speaking to Barry here --- Tyson Draper --- did not find him believable at all and said that his sense was that Barry was lying. Now, that doesn't mean Barry is in fact lying --- Draper could be wrong, of course --- but I think it's important to note that the guy who was speaking to Barry in person did not find him convincing. Some of you are possibly being misled by Barry's Midwestern mannerisms. Yes, Midwesterners tend to be very nice people, but just because a person has Midwestern mannerisms doesn't mean he isn't capable of doing something terrible.
Also, what was Barry doing that would cause him to be shirtless, wet and "frantic" looking --- Draper's description --- and in his truck, a quarter of a mile from his house (with several people, including his mother, in the truck with him)? Is he out there, pretending to be looking for Suzanne? For the mother's benefit perhaps? As if he's going to find Suzanne (or evidence) a quarter mile from his house and three weeks after she went missing? If so, I can't help but think that Barry is doing a lot of acting here, and none of it is very convincing.
All of this, of course, is just my opinion, and I continue to hope that I am wrong about him.