Finishing the four-issue mini-series, Smallville Season Eleven: Alien #4 features Superman‘s final battle with the Monitor in Russia, and pits Batman against an evil Joker-Batman version of himself from another Earth who severely wounds Nightwing before his capture.
By the end of the issue Batman agrees to join the Justice League (at least on a temporary basis), the threat from the Multiverse has been dealt with (at least for now), and things can get back to normal (or what passes for normal in the Smallville Universe).
The ease of which Superman beats the Monitor here took me a little by surprise (isn’t this the same guy who was mopping the floor with the Man of Steel just last issue?), but Smallville Season Eleven: Alien #4 ties up all the loose ends (including quite a bit of epilogue involving Bruce finally agreeing to join the JLA), and even gives us a little of Lex being Lex (causing tomorrow’s trouble). Worth a look.