I created one Nemesis a while ago and have had numerous fun run-ins with him. When my Nemesis went to jail, I created a second nemesis to which I also had some fun run-ins with. It seems that when I created my second nemesis, my first one is still stuck in jail and doesn't want to break out (lol).

My questions is,...... is there any way I can get my first Nemesis to come and bother me again?

Talk to Defender, mine didn't break out until I talked to him. I also never got a mail message to talk to him.

I think you're confused as to what the OP is asking. He's not talking about breaking the nemesis out of the MC jail, but out of SH where they are 'kept' after you defeat them permanently.

And to the OP, nope - this is currently not possible, although it has been mentioned many times as a feature. Methinks its in the works.

I've only jailed one nemesis so far so I'm not sure if you always get that little cutscene where.. you know.. that thing happens (don't want to spoil it for anyone who hasn't gotten that far). It pretty heavily implies your "defeated" nemesis might return at a later date, perhaps as more nemesis type content is released.

Aye, that seems to be the implication. And yeah, you get that cutscene every time.

no one knows if you can get them back, there is a theory that after you fill all your nemesis slots up it goes back to the 1st again though, but cant confirm that til someone tries to finish all 18

This would be good since there are perks for defeating the minions. Sure you could assign each nemesis with the same type of minions but variety is a good thing.

thats pretty much what i have been doing
with the new instance you can at least get a few kills of various minion types, but thatl be EXTREMELY slow going compared to doing it yourself or taging along on friends missions