Families unravel, deteriorate, and violently self-destruct in Blue.Heart.Oxygen , three one acts (Heart’s Desire, Blue Kettle, and Not Not Not Not Not Enough Oxygen) by Caryl Churchill. A father is trapped in his apartment awaiting his son in a world where breathable air is sprayed from a can, a couple anticipates their adult daughter’s visit amid a tornado of unburied secrets, and a man lies to old women to steal from them in these fast-paced, surreal pieces.