On the surface level, it appears that frank abagnale jr. is bad, and carl hanratty (tom hanks) is good. however, describe what underlying problems they both deal with

Carl, the FBI agent, initially thought that he was persecuting a tremendous criminal, but over time he sees that he is only a teenager, that he has lost his way in life.

Frank the swindler, has a natural charm and manages to seduce his persecutor. Probably Frank was looking for his absent father, and sees Carl as a surrogate father. Viewers of the film confuse the true roles, seeing a bored policeman and a seductive swindler ...