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.