I'm a huge media nerd. I love Films, and I'm even doing a degree in media production so don't think I'm just against anything but books when I say this but... I really don't see the point in book trailers. For the most part they are badly produced, badly edited and they usually don't tell you anything that you can't find out from reading the blurb. They are effectively pointless.
Or at least that's what I thought until I saw the one for The Butterfly Clue.
Now because I'm a film student there are places in this trailer that look a little amateur but for the most part I think it is brilliantly filmed, well edited and tells me more than just reading the blurb can without giving anything away.
I wish more book trailers were like this. Sigh.