Back in high school, this used to be my favorite of the Incarnations series. Re-reading it now, it has lost some of its luster, but it was still a favorite re-read for me.
This book centers around Orlene, who committed suicide after the death of her baby son, Gaw-Two, which we saw in Book 2 of the series. With the help of Jolie, Satan's first wife, and Vita, the singer from book 5, who is apparently now a whore on a drug known as Spelled H and somewhat inappropriately attracted to a much older man who definitely should know better, Orlene defies her assent to heaven to search for her son. Then she finds out that Nox, the Incarnation of Night, has taken him and the only way to get the child from her is to go do as Nox requires and seek out each Incarnation, and ask for their favor. Though she is related or connected to each Incarnation, this is not going to be as easy as it seems.
The book takes a somewhat different route than the first five. Rather than Orlene taking up the Office of Good and battling it out with Satan, it instead focuses on her trying to save her baby and the state of the world and the seeming absence of that office. The book culminates with the Incarnations we became familiar with in the first 6 novels agreeing to a replacement in the office.
Some of the trials were disturbing to me, but on the whole the quest was a noble but futile one. It was more about the journey though, and revisiting familiar characters for me. While I found some of it disturbing, it still was a good read for me, and good preparation for the final book of the series.