If the third film in the Harry Potter series, last year's "Prisoner of Azkaban," seemed frightening with its soul-sucking Dementors and its German expressionist aesthetic, then the fourth installment, "Harry Potter and the Goblet of Fire," will have kids quaking in their seats - and perhaps wishing they had an invisibility cloak to hide beneath.
This "Potter" earns its PG-13 rating, a fi...
