Time, Bradley asks us to remember, is what we lose. Only in a movie can we entertain and engineer the fantasy of getting it back, rewinding the clock, restoring presence to a loved one's absence. Thank God, then, for movies. This one especially.

It's a document of mutual care; a self-authored family archive magnified by the scope of its editor and platform; and a compassionately rendered adaptation of the ways in which we feel the tempo, intervals, duration and memory of time.

[A] viscerally emotional documentary...