diff --git a/novelwriter/core/index.py b/novelwriter/core/index.py
index 7ea713b6..e9491027 100644
--- a/novelwriter/core/index.py
+++ b/novelwriter/core/index.py
@@ -498,13 +498,15 @@ class NWIndex:
         """
         return self._itemIndex.mainItemHeader(tHandle)
 
-    def getTableOfContents(self, maxDepth, skipExcl=True):
+    def getTableOfContents(self, rootHandle, maxDepth, skipExcl=True):
         """Generate a table of contents up to a maximum depth.
         """
         tOrder = []
         tData = {}
         pKey = None
-        for tHandle, sTitle, hItem in self._itemIndex.iterNovelStructure(skipExcl=skipExcl):
+        for tHandle, sTitle, hItem in self._itemIndex.iterNovelStructure(
+            rootHandle=rootHandle, skipExcl=skipExcl
+        ):
             tKey = f"{tHandle}:{sTitle}"
             iLevel = nwHeaders.H_LEVEL.get(hItem.level, 0)
             if iLevel > maxDepth:
diff --git a/novelwriter/dialogs/projdetails.py b/novelwriter/dialogs/projdetails.py
index e83fc0a4..7b23498a 100644
--- a/novelwriter/dialogs/projdetails.py
+++ b/novelwriter/dialogs/projdetails.py
@@ -27,15 +27,17 @@ import math
 import logging
 import novelwriter
 
-from PyQt5.QtCore import Qt, QSize
+from PyQt5.QtCore import Qt, QSize, pyqtSlot
 from PyQt5.QtGui import QFont
 from PyQt5.QtWidgets import (
-    QWidget, QDialogButtonBox, QVBoxLayout, QTreeWidget, QTreeWidgetItem,
-    QLabel, QSpinBox, QGridLayout, QHBoxLayout, QLineEdit, QAbstractItemView
+    QAbstractItemView, QComboBox, QDialogButtonBox, QGridLayout, QHBoxLayout,
+    QLabel, QLineEdit, QSpinBox, QTreeWidget, QTreeWidgetItem, QVBoxLayout,
+    QWidget
 )
 
+from novelwriter.enum import nwItemClass
 from novelwriter.common import numberToRoman
-from novelwriter.constants import nwUnicode
+from novelwriter.constants import nwLabels, nwUnicode
 from novelwriter.gui.custom import PagedDialog, QSwitch
 
 logger = logging.getLogger(__name__)
@@ -281,12 +283,26 @@ class GuiProjectDetailsContents(QWidget):
 
         # Internal
         self._theToC = []
+        self._currentRoot = None
 
         iPx = self.mainTheme.baseIconSize
         hPx = self.mainConf.pxInt(12)
         vPx = self.mainConf.pxInt(4)
         pOptions = self.theProject.options
 
+        # Header
+        # ======
+
+        self.tocLabel = QLabel("<b>%s</b>" % self.tr("Table of Contents"))
+
+        self.novelValue = QComboBox(self)
+        self.novelValue.setMinimumWidth(self.mainConf.pxInt(200))
+        self.novelValue.currentIndexChanged.connect(self._novelValueChanged)
+
+        self.headBox = QHBoxLayout()
+        self.headBox.addWidget(self.tocLabel)
+        self.headBox.addWidget(self.novelValue)
+
         # Contents Tree
         # =============
 
@@ -389,7 +405,7 @@ class GuiProjectDetailsContents(QWidget):
         # ========
 
         self.outerBox = QVBoxLayout()
-        self.outerBox.addWidget(QLabel("<b>%s</b>" % self.tr("Table of Contents")))
+        self.outerBox.addLayout(self.headBox)
         self.outerBox.addWidget(self.tocTree)
         self.outerBox.addLayout(self.optionsBox)
 
@@ -412,19 +428,37 @@ class GuiProjectDetailsContents(QWidget):
     def updateValues(self):
         """Populate the tree.
         """
-        self._prepareData()
+        self._currentRoot = None
+        self._populateNovelList()
+
+        rootHandle = self.novelValue.currentData()
+        self._prepareData(rootHandle)
         self._populateTree()
+
         return
 
     ##
     #  Internal Functions
     ##
 
-    def _prepareData(self):
-        """Extract the data for the tree.
+    def _populateNovelList(self):
+        """Fill the novel combo box with a list of all novel folders.
         """
-        self._theToC = []
-        self._theToC = self.theProject.index.getTableOfContents(2)
+        self.novelValue.clear()
+
+        tIcon = self.mainTheme.getIcon(nwLabels.CLASS_ICON[nwItemClass.NOVEL])
+        for tHandle, nwItem in self.theProject.tree.iterRoots(nwItemClass.NOVEL):
+            self.novelValue.addItem(tIcon, nwItem.itemName, tHandle)
+
+        self.novelValue.setVisible(self.novelValue.count() > 1)
+
+        return
+
+    def _prepareData(self, rootHandle):
+        """Extract the information from the project index.
+        """
+        logger.debug("Populating ToC from handle '%s'", rootHandle)
+        self._theToC = self.theProject.index.getTableOfContents(rootHandle, 2)
         self._theToC.append(("", 0, self.tr("END"), 0))
         return
 
@@ -432,6 +466,18 @@ class GuiProjectDetailsContents(QWidget):
     #  Slots
     ##
 
+    @pyqtSlot()
+    def _novelValueChanged(self):
+        """Refresh the tree with another root item.
+        """
+        rootHandle = self.novelValue.currentData()
+        if rootHandle != self._currentRoot:
+            self._prepareData(rootHandle)
+            self._populateTree()
+            self._currentRoot = rootHandle
+        return
+
+    @pyqtSlot()
     def _populateTree(self):
         """Set the content of the chapter/page tree.
         """
diff --git a/tests/test_core/test_core_index.py b/tests/test_core/test_core_index.py
index 8f126e56..14aaa9be 100644
--- a/tests/test_core/test_core_index.py
+++ b/tests/test_core/test_core_index.py
@@ -709,16 +709,16 @@ def testCoreIndex_ExtractData(mockGUI, fncDir, mockRnd):
     assert theIndex.getNovelTitleCounts(skipExcl=True) == [0, 1, 2, 3, 0]
 
     # Table of Contents
-    assert theIndex.getTableOfContents(0, skipExcl=True) == []
-    assert theIndex.getTableOfContents(1, skipExcl=True) == [
+    assert theIndex.getTableOfContents("0000000000010", 0, skipExcl=True) == []
+    assert theIndex.getTableOfContents("0000000000010", 1, skipExcl=True) == [
         ("0000000000014:T000001", 1, "New Novel", 15),
     ]
-    assert theIndex.getTableOfContents(2, skipExcl=True) == [
+    assert theIndex.getTableOfContents("0000000000010", 2, skipExcl=True) == [
         ("0000000000014:T000001", 1, "New Novel", 5),
         ("0000000000016:T000001", 2, "New Chapter", 4),
         ("%s:T000001" % hHandle, 2, "Chapter One", 6),
     ]
-    assert theIndex.getTableOfContents(3, skipExcl=True) == [
+    assert theIndex.getTableOfContents("0000000000010", 3, skipExcl=True) == [
         ("0000000000014:T000001", 1, "New Novel", 5),
         ("0000000000016:T000001", 2, "New Chapter", 2),
         ("0000000000017:T000001", 3, "New Scene", 2),
@@ -727,8 +727,8 @@ def testCoreIndex_ExtractData(mockGUI, fncDir, mockRnd):
         ("%s:T000001" % tHandle, 3, "Scene Two", 2),
     ]
 
-    assert theIndex.getTableOfContents(0, skipExcl=False) == []
-    assert theIndex.getTableOfContents(1, skipExcl=False) == [
+    assert theIndex.getTableOfContents("0000000000010", 0, skipExcl=False) == []
+    assert theIndex.getTableOfContents("0000000000010", 1, skipExcl=False) == [
         ("0000000000014:T000001", 1, "New Novel", 9),
         ("%s:T000001" % nHandle, 1, "Hello World!", 12),
         ("%s:T000011" % nHandle, 1, "Hello World!", 22),