'Harry Potter and the Half-Blood Prince' trailer revealed

The Internet-only trailer for "Harry Potter and the Half-Blood Prince" hit traileraddict.com earlier today, and without going into too many spoilers, we can say this looks like the sort of high-action movie you'd expect leading up to the series' two-part finale. At the same time, some surprising developments from J.K. Rowlings' original novel go unseen; it's nice to see some of "Half-Blood Prince's" mystery will be preserved. Want more detailed spoilers? Read on.

Warning: Really, spoilers ahead for "Harry Potter and the Half-Blood Prince":

A good amount of the trailer is devoted to Harry's pensieve view of Tom Riddle's rise to power as Lord Voldemort. Voldemort's attack on London is also highlighted, and we see Harry and Dumbledore visit the locket Horcrux's resting place, though no mention of horcruxes is made. (Perhaps so as not to confuse the Muggles?)

No mention, by the way, is made of the half-blood prince's identity, nor his shocking actions toward the end of the book.

For a larger version of the trailer, visit traileraddict. Enjoy: