The Last of Us Season 1 has concluded, wrapping up with a gripping and violent season finale that fans are no doubt excited to see continue with the forthcoming second season. Two of the stars of the finale have discussed the Season 1 finale, including the pivotal sequence that kicked things off. Spoilers for The Last of Us follow below.

The Season 1 finale opens with a flashback showing Anna (Ashley Johnson) trying to outrun an infected while pregnant with Ellie. She evades the infected long enough to barricade herself into a room, but her foe eventually breaks in. It bites Anna, and in the struggle, she kills the infected and gives birth to Ellie. Unfortunately for Anna, she becomes infected, too, but Ellie lives and is immune.

Some TV shows and movies use CGI or dolls in the place of very young babies, but HBO's production featured real babies. These were twin 12-day-old babies. Johnson recalled that one of them, a girl named Mila, was a better actor than her twin brother.