In "Finish Line," we discovered that Iris hadn't been murdered by Savitar at all, and it was Savitar's underestimation of Team Flash that would ultimately be his undoing. Sadly, however, the cost of saving Iris was the life of another member of the team.

Who saves Iris from Savitar?

HR really goes above and beyond in The Flash Season 3 finale. Not only does he play a critical role in the fight against Savitar, he essentially defeats him single-handedly. HR saves Iris on The Flash, becoming the hero he always dreamed he'd be.

Why does Savitar kill Iris?

In order to ascend, however, Savitar will need two things: Iris will need to die so that Barry is driven so far into the dark that he creates the time remnants to stop Savitar, thus creating Savitar.