Here's a refresher course on replicants, Harrison Ford's Deckard and everything else that will come back from the 1982 classic.
Blade Runner Original RECAP - Everything You Need to Know Before Blade Runner 2049
Blade Runner': the Original Movie Plot Synopsis You Need Before '2049
Everything You Need to Know About 'Blade Runner' Before 'Blade Runner 2049
Exploring Humanity and Identity in Blade Runner 2049 - Philosophy Analysis — Eightify
Film review: Does Blade Runner 2049 top the original?
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Blade Runner 2049 - Plugged In
Blade Runner 2049 is the rare sequel that justifies its right to exist