"I could literally cry just thinking about it," said the actor, who plays Danny Reagan on the drama series. It takes a lot for a tough guy like Tom Selleck to cry. And if Tom Selleck is crying, you better believe everyone around him is too.

The beginning of the end of Blue Bloods starts on Friday, October 18, with the first of the last eight episodes of the long-running CBS drama, but the possibility of this world expanding has come up since news of its cancellation.