Astra goes world-hopping. It's a collection of short stories, with some spoilers for the earlier ones ahead.
After an --interesting date, assisted by Kitsune's presence, Astra, despite her injury, is recruited to help catch a serial killer who can catch his victims with his breakthrough powers. She's caught. The resultant mirror reaction throws her into another world.
A series of short stories follows. Some stronger than others. Three are cross-overs into two super-hero worlds of other authors; one into Shakespeare (which was partly in play format; I think he should have just written it out as a closet drama); one sends Ozma and Grendel into Oz (because the Young Sentinels are, of course, trying to find her); one quite touching one, short, where she lands in what appears to be a military game.