Moench and Broederick contribute the middle chapter to a very good Calendar Man story in Detective 551 (June 1985).
The Calendar Man is made a far more serious villain in this story than he had been in either of his previous ones. He has been hired, through the Monitor, to kill Robin, but is making that the climax of a series of holiday-themed crimes.
Batman plays a nice, interactive game with Alfred and Jason, working with them to figure out what the holidays might be that Calendar Man is going to base his crimes on, but he refuses to let Jason accompany him as Robin when they go out, insisting it is simply too dangerous.
As always, Calendar Man alters his costume and weaponry to match his crime, leaving Batman always unprepared for what the villain will throw at him.
The story concludes in the following issue of Batman.
No costume, but at least Dinah Lance gets a supporting role in this Green Arrow story by Cavalieri, Moore and Patterson.
The story deals withe plight of illegal immigrants from Mexico, which seems a timeless issue in the US. They are being hidden in the basement of a church in this story, and Oliver Queen goes to help, and write about, them. But as it turns out, that just means he gets rounded up with the rest of them when the border police come.
Meanwhile, Onyx wonders if she can trust the guy who has been bringing her food, and hiding her and keeping her safe. This woman has issues.