Mercy Sparx, 4: Killing the GatekeepersPaperback, 31 October 2017

Collects issues 10, 11, and 12 of the Mercy Sparx the ongoing series, and the entire Year One miniseries.

When Mercy learns that her mother, Faustia, was involved in her abduction from Sheol, suddenly dealing with angels doesn't seem so bad. That's because Mercy doesn't fear anyone the way she does her own mother. If Mercy is to have any hope of stopping her megalomaniacal, bipolar matriarch, she'll have to drudge up some seriously painful memories to pull it off. If she fails, Faustia just may cut off humanity from Heaven (and Hell) forever.