Vincent repeatedly evades the grasp of the investigation. Finally, it is revealed that Gattaca's mission director was the killer, with the administrator's threats to cancel the mission as a motive. Vincent learns that the detective who closed the case was his brother Anton, who in turn 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 expresses surprise at Vincent's stamina, so Vincent reveals that his strategy for winning was not to save energy for the swim back. Anton turns back and begins to drown, but Vincent rescues him and swims them both back to shore.