There has been no second season shot so that is probably a no unless there is overwhelming demand for it.
Person or Persons Unknown - novel - was created in 1998.
The ISBN of Person or Persons Unknown - novel - is 0425165663.
Person or Persons Unknown was created on 1962-03-23.
Person or Persons Unknown - novel - has 336 pages.
The duration of Persons Unknown - TV series - is 2520.0 seconds.
Yes. He is mentioned in the second episode of the first season, but it is unknown who he is.
Persons Unknown - TV series - ended on 2010-08-28.
Persons Unknown - TV series - was created on 2010-06-07.
Unknown. As of May 1st '17, Cheer Squad has yet to be renewed or cancelled.
Death valley is not returning for a second season on MTV but it is still unknown whether it will be picked up by another network or not.
Yes
The second season of D.Gray man is already finished. The first one is called 1st stage and the second one 2nd stage. I believe you are looking or the season 3 but it's unknown will it be made or not. I think they are waiting for manga to catch up a little...