This is all in The Hall of Doom -- it is a level 30 Meta-Hero final mission.
And unlike other solo instances, you must get all the first 4 before entering the final battle stage versus Lex Luthor . The instance locks you out of backtracking.
First Investigation: | ||
Second Investigation: | ||
Third Investigation: | ||
Fourth Investigation: | ||
Fifth Investigation: | ||
Sixth Investigation: |