diff --git a/show.php b/show.php
index f960ec6..f0bf6f0 100644
--- a/show.php
+++ b/show.php
@@ -52,6 +52,10 @@
 	if(!isset($_SESSION['titlesLoaded'])) $_SESSION['titlesLoaded'] = 0;
 	$presFile = str_replace('..','',(string)$_SESSION['currentPres']); // anti-hack
 	$presFile = "$presentationDir/$presFile".'.xml';
+	
+	if (!file_exists($presFile)) {
+		$presFile = "$baseDir/tools/missing.xml";
+	}
 
 	// Load in the presentation
 	$fh = fopen($presFile, "rb");
diff --git a/tools/missing.xml b/tools/missing.xml
new file mode 100644
index 0000000..b4506b4
--- /dev/null
+++ b/tools/missing.xml
@@ -0,0 +1,9 @@
+<slide title="Missing Slide">
+
+<break lines="5" />
+
+<example fontsize="1.8em" marginleft="1.2em" marginright="0.5em">
+The desired slide is missing. Please contact the author (with the URL) so that he or she may update this talk.
+</example>
+
+</slide>