Helix - Season 1 Episode 12

The Scythe is revealed to be the immortal Spencer Chiswick, Constance Sutton\’s 16-year-old son. Alan and Hatake lure Spencer and one of his agents outside where they plan to lay a trap; Hatake throws a canister, allegedly containing the virus, onto the snow and causes one of Spencer\’s operatives who attempts to retrieve the virus to fall into a chasm. Spencer learns Julia is Hatake\’s daughter and abducts her. He gives Hatake a choice of lives to save—Julia\’s or Daniel\’s, but Daniel sacrifices himself. Julia realizes that a package Spencer brought with him contains her mother.