On the Rain-Slick Precipice of Darkness: Episode Two/Walkthrough

As with the first game in the series, the cases you unlock are not completed in the order they appear. In fact, several overlap, with items gained and locations unlocked partway through some cases that are required to complete a case started earlier in the game.

Prologue
"Now, three Gods wait on the windowsill Where one God's blood was lately spilled

While black tongues lap at the spreading pool And build the strength they need to rule"

- The Quartet for the Dusk of Man