Mac

I did some research and found some plotlines and spoilers for Season 6, I am not sure if the are right or not!

6x01 - Epilogue
Danny and Mac get the unexpected help of a young woman while trying to solve their most recent case involving a cop killing.

6x02 - Blacklist Featuring Hangman
The case of a cyber killer, who appears to be targeting medical healthcare workers, turns personal when the suspect invokes the name of Mac's father who had died nearly two decades earlier. Mac has to figure out why the mysterious caller keeps asking questions about his father and how he knows everyone's name....

Hill Harper starred in "The Handler," on CBS, for which he received a 2004 Golden Satellite Award nomination as Outstanding Supporting Actor in a Drama Series. His role in the CBS series "City of Angels," brought him an NAACP Image Award nomination as Best Supporting Actor. His additional television credits include "The Court," "Live Shot," "Lackawanna Blues" and the CBS mini-series "Mama Flora's Family." He has made guest appearances in "The Sopranos," "Soul Food," "The New Twilight Zone," "ER," "The Fresh Prince of Bel-Air," "Married...with Children," "NYPD Blue" and "Cosby" on CBS. His feature...