Next page is a crossover arc with The Banshee Cometh. If you haven't read Banshee yet, I would highly recommend doing so first. Preferably up to at least Banshee #3. Records #2 (part of Banshee) is also recommended for some insight on a certain character's past.
If you would prefer skipping ahead to the next Milady arc (A Little Sister Who Loves Her Elder Sister) instead, click here.