A few years ago…
Darwin's Corporation… A company that both the girl's and Mark's father used to work for. Mark's father used to work as the accountant of the company while the girl's father was a lead scientist for a project that is called "Genesis".
Both these fathers were in their own departments, doing completely different tasks. Yet, in the end, they stumbled into the very same thing. That thing being something very suspicious, which the company was trying to hide, but failed in doing so because of the cleverness and diligence of these two fathers.
These two fathers, they were so diligent in their work that they would barely spend time with their family. The way they are so diligent is both a bad and good thing, however, in the end, the bad overwhelmed the greater as their diligence had caused them to look into something that they weren't supposed to.