(Not sure if I'm using that phrase correctly, but...) A large part of my current story involves the protagonists seeking information about aliens. I've been toying with the idea of misleading them for a bit - two characters, a homeless man and a seemingly "normal" man, both claim to be in talks with aliens, but both in different ways, and the things they say don't match up with each other. This throws the protagonists off for a while, as they believe the both of them, until it is revealed that the "normal" guy is actually just crazy, and nothing he's told them is actually true. I was just wondering, would that seem like lazy writing - like I'd written myself into a corner and just pulled that out of my arse? Or would it just be annoying? This is the only point in the story where the characters would be misled like that, but is one time too many?