chunk: Vincent repeatedly evades scrutiny from the investigation, and it is revealed that Gattaca's mission director was the killer, as the administrator was threatening to cancel the mission. Vincent learns the identity of the detective who closed the case, his brother Anton, who has become aware of Vincent's presence. The brothers meet, and Anton warns Vincent that what he is doing is illegal, but Vincent asserts that he has gotten to this position on his own merits. Anton challenges Vincent to one more game of chicken. As the two swim out in the dead of night, Anton is surprised at Vincent's stamina, and Vincent reveals that his trick to winning was not saving energy for the swim back. Anton turns back and begins to drown, but Vincent rescues him and swims them both back to shore using celestial navigation.