If even a molecule of it goes inside a human, they die from being drowned within.
In an apocalyptic world without water, a team is sent to an abandoned research station on the moon to retrieve the samples left behind.
Her husband was found tied up and shot dead.
This means that she led the research project that involved experimenting on children, leading to dozens of brutal deaths.
Much more devious and somehow a little easier to believe than "lunar water"? The night of Gabriel's death, Theo hadn't known about her traumatic history of feeling uncared for, and didn't know his stunt would result in her killing Gabriel.
Because she has a large sum of money, her journey back to Seoul has been much easier this time.