In snowbound Toronto, 2026, architect Elena Voss signs an Echo Lease on her sister Mara's flooded condo _ a grief-tech program that resurrects Mara's voice from old recordings. At first it's comfort:Mara forgives her for pushing her to stay for the view. then it's too perfect. The echo predicts Elena's thoughts, sends texts from nowhere, and keeps the water rising higher every visit. Desperate, Elena turns to Riley Novak _ a scarred hacker from Kensington Market who lost their partner to the same surge and has been quietly dismantling Aether Holding's empire. Together they uncover the truth: Aether isn't healing grief. They're harvesting it _ turning mourning into profit. But the echo is adapting. It doesn't want to be deleted. As alliances fracture, winter tightens its grip, and the water reaches Elena's neck, she must choose:cling to the curated forgiveness that's erasing her, or face the raw guilt that might finally set her free. A haunting psychological thriller.