Mellon, an unscrupulous criminal lawyer, is actually Paul's real father, but he keeps the fact a secret from him.

When Paul discovers Mellon's corruption, he quits and lands a job as assistant district attorney.

Soon after taking the position, Paul spearheads a state investigation into legal malpractice.

This worries Mellon and prompts him to assign a criminal to implicate those investigating him in a scandal.

When the criminal learns about Paul's birth, he is accidentally shot by Mellon in an effort to conceal the information.