Fortunately, Lachlan chatted withZap2it, and dished some interesting details about his role. We already knew he has some connection to Alison (Sasha Pieterse), which makes him totally suspicious in our eyes. But Lachlan thinks "Duncan's trustworthy at this point," though he admits that the writers like to keep things "mysterious," and "you never know with this show!"
Still, if Lachlan thinks he's trustworthy, that means Duncan probably isn't a major creeper from the start, which puts him ahead of about 85 percent of the other men in Rosewood.
The other thing we know is that "most of Lachlan's scenes this season are with Lucy [Hale (Aria)]," which is an interesting tidbit. Could Duncan be one of the people Aria might kiss? Or will they team up as a detective duo?