In the dynamic conclusion to last seasons cliffhanger, the manhunt for Mac Taylor and the man who took him hostage continues. Additional episodes will include; guest stars, Rumer Willis, Maroon 5, Nelly and Marshall Faulk and storylines that deal with: deaths by radiation poisoning, a crime scene at 30,000 feet and the 100th episode where the team tackles their most unusual case yet, two victims, within two weeks, both named Mac Taylor. And our own Mac Taylor along with 15 others must determine the killer's motive before he strikes again.