Obsidian Heart 1 The Wolves of London by Mark Morris The Wolves of London by Mark Morris (Titan Books, October 2014).
Obsidian Heart 2 The Society of Blood by Mark Morris The Society of Blood by Mark Morris (Titan Books, October 2015).
Obsidian Heart 3 The Wraiths of War by Mark Morris The Wraiths of War by Mark Morris (Titan Books, October 2016).