John Thaddeus

After President Logan botches up CTU's capture of Marwan, he agrees to call in an advisor who has dealt with terrorism firsthand, and Chloe's first field assignment almost ends in disaster.

As Vice President Logan nervously steps into the presidential position, Jack learns that the missing portion of the "nuclear football" reveals the locations of nuclear warheads.

The team must profile a serial killer, covered in tattoos, who commits suicide and leaves clues to his last victim's location.

Tony goes under cover as an escaped prisoner chained to a convict who holds the key to recovering stolen Iraqi art, but when his GPS device fails, the team must find other ways to locate him.

Jane and Maura are asked to present the case of a serial killer at a symposium for law enforcement; Jane and Maura make a discovery.

A young accident victim (Nicolette Little) requires a blood transfusion that can come only from her father (John Thaddeus) who is missing from the hospital.