The sixth film in the series, Half-Blood Prince, was the most expensive film to produce as of 2009.

Hooper also composed the soundtrack to Half-Blood Prince but decided not to return for the final films.

The Half-Blood Prince is of great mystery to Harry.

It seemed like nothing happened in the Half-Blood Prince.

I actually found Half-Blood Prince to be one of the worst of the series.

Snape reveals that he is the Half-Blood Prince and manages to escape.

The record-breaking publication of Half-Blood Prince was accompanied by controversy.

Harry Potter and the Half-Blood Prince received generally positive reviews.

The initial print run for Half-Blood Prince was a record-breaking 10.8 million.

A second meeting occurs just before the beginning of Harry's sixth year, in Half-Blood Prince.