It is a slick and calculated production, designed to give Potterheads exactly what they want, how they want it.

...is a warm blanket — er, Invisibility Cloak — of nostalgia that mixes cozy cast reunions and fond friendship memories with a film-by-film approach to the eight-movie saga.

...an emotional, enlightening, and thrilling retelling of the experience of making the eight films that defined a generation.

Fun anecdotes, undeniable chemistry, and an earnest sense of heart help to keep the magic alive.