Killer Siblings

About Killer Siblings

Exploring the psychology and past of cold-blooded siblings who have carried out vicious murders.

Oxygen's Killer Siblings is a documentary series.

Since October 2019 it has reached 3 seasons and 32 episodes. It is still in production. Seasons run to about 11 episodes.

American members can watch it on OXYGEN, Peacock Premium, and Peacock Premium Plus.