Trivia: The voice of Jake Gyllenhaal's father is Scott Bakula, who starred in Quantum Leap, which shares the premise of being in another person's body with this movie.
Trivia: Derek Frost has 2 totally different driver's licenses. All personal data is different.
Answer: He died in the train bombing along with all the other passengers. If you're asking what happened to the real Sean Fentress in the alternate time line created at the end of the movie, Colter took over his body and continued to live the life that Fentress had been living.
Casual Person