Grady saw Thomas Hardin, the man who killed his parents, alive. And when he tells Beaudreaux, Beaudreaux tells him that Hardin is dead, and they saw him die remember. However, Beaudreaux was lying it seems that Hardin didn't die but was in a coma and Beaudreaux chose not to tell Grady about this. But what Beaudreaux doesn't know is that Hardin regained consciousness and has been walking around, and has accepted a job. Grady finds out who he is working for, and he and Beaudreaux get Hardin and this time he is dead. (thetvdb.com)