It was hard to hold myself to small breaths, hard to walk slowly when there were monsters all around, and I could feel the air sack getting smaller and smaller, but I had no idea how long it would take me to reach the shore or whether it would even be safe, at that point, to get out of the water. I was pretty certain Niloch would be watching for me to surface. He might even be waiting when I reached the riverbank, since it didn’t take a whole lot of smarts, even by the standards of infernal nobility, to realize what I was trying to do.

I had just kicked away a few larger specimens of the crabs with faces—the bigger ones looked both less human and more expressive, if you can imagine that—and was really beginning to wonder whether I had enough air to make the shore, when I saw another large, long shape coming out of the murk in my general direction. Certain it was another one of the plated monsters or something even worse, I crouched down in the mud and froze in place, trying not to let the bubble of air in my lungs escape and give me away. But what came toward me out of the clouds of silt, heading out toward the deepest part of the river, was not the prehistoric monster I expected, but . . . a parade. Humanoid shapes walked along the river bottom in a line, kicking up the gray ooze so that they seemed to be moving in a fog, like a vision of fairies in the Irish hills. Then I saw that they were walking along the bottom because they were chained together.

Slaves. Somebody’s slave ship had been chased by a faster ship, or perhaps merely sunk. Whichever it had been, these poor damned souls had wound up at the bottom of the Phlegethon, too heavy because of their chains to reach the surface. I could only guess how long they had been down here, trudging through the mud, but it had been long enough for the river to take its toll. Several of the slaves were all but gone, only bones and a few rags of skin still tangled in their chains, but many of the others looked almost whole except for the places where fish and other river creatures had gnawed at them. The leader, whose grim determination seemed to have drawn the rest along after him, had lost both eyes, one arm, and most of the fingers from his remaining hand, but still he moved forward through the dark water, one bony, tattered foot in front of another, his fellows stumbling or floating behind him, depending on how much of them remained. When I saw all those empty eye sockets I understood why the poor bastards were headed in the opposite direction from the shore.