"Alexander was only 17 when I recruited him to work here from Hungary, but even at that age he was perhaps the most brilliant scientist I ever met. He was fluent in six languages and was a scientific and mathematical genius... light years ahead of other scientists twice his age.
He was most helpful for his first four years here, but then succumbed to blind power-lust, fed by his enormous ego. Unknown to us, he became a spy for the KGB in '93, but was actually a double agent... stealing our most important secrets to keep them for himself after leaving us.
Dasco escaped from the KGB as well, and became very wealthy selling secrets to other governments hostile to America as an anonymous data merchant in Europe. He got even wealthier later in the nineties during the so-called 'Dot-Com Bubble'.
We lost track of him after 2000... now we know what he's been up to since that time."