Season 1 had ended with a choice. She had saved the city from the Memory Plague, but the cure required a sacrifice: her own recollection of the man she loved, Elias. She woke up in a hospital bed with the world intact, but with a smooth, empty space in her heart where a decade of laughter, arguments, and quiet mornings used to be.

The sharp pain in her chest screamed in recognition. This was what she'd been training for. Season 1 had been the setup. Season 2 was the surgery.

"I don't know you," Lena lied, because the pain knew him intimately.