The story revolves around a psychologist, Dr. Daniel, who works with the Federal Bureau of Investigation (FBI), to solve complex cases, with the help of his colleague, Kate. Among the cases he handles in this part is the case of a convicted man who has been retried.
At the beginning of the third season, Dr. Pierce finds himself on a dangerous international mission with the FBI, while at the same time, Max Lewicki and Dean Paul Haley hatch a plan to bring Pierce back to Chicago.