Silo' star Rebecca Ferguson and creator Graham Yost discuss the Season 3 finale's twists before the fourth and final season premiering in July 2027.

The cheapest way to watch the Season 3 finale is still Apple’s 7-day free trial. Eligible new subscribers can stream every episode of “Silo” and watch the finale without paying upfront. If you already subscribe to Peacock or plan to keep both services long-term, the bundle may offer better ongoing value than paying for each subscription separately.