diff --git a/DEVELOPMENT.md b/DEVELOPMENT.md
index 2f9dcd79..94f952de 100644
--- a/DEVELOPMENT.md
+++ b/DEVELOPMENT.md
@@ -302,7 +302,7 @@ Fictioneer customizes WordPress by using as many standard action and filter hook
 | `user_has_cap` | `fictioneer_edit_only_comments`
 | `wp_list_comments_args` | `fictioneer_comment_list_args`
 | `wp_handle_upload_prefilter` | `fictioneer_upload_restrictions`
-| `wp_insert_post_data` | `fictioneer_remove_restricted_block_content`, `fictioneer_strip_shortcodes_on_save`
+| `wp_insert_post_data` | `fictioneer_remove_restricted_block_content`, `fictioneer_strip_shortcodes_on_save`, `fictioneer_see_some_evil`
 | `wp_is_application_passwords_available` | `__return_false`
 | `wp_robots` | `fictioneer_add_noindex_to_robots`
 | `wp_sitemaps_enabled` | `__return_false`
diff --git a/single-fcn_chapter.php b/single-fcn_chapter.php
index ef16fd98..c893b55c 100644
--- a/single-fcn_chapter.php
+++ b/single-fcn_chapter.php
@@ -25,6 +25,17 @@ if ( ! empty( $is_hidden ) ) {
 
 get_header( null, $header_args );
 
+// Draft or private (if caching is on)?
+$post_status = get_post_status( $post_id );
+
+if (
+  fictioneer_caching_active() &&
+  $post_status !== 'publish' &&
+  ( $_GET['preview'] ?? 0 ) !== 'true'
+) {
+  fictioneer_redirect_to_404();
+}
+
 ?>
 
 <div class="progress">
diff --git a/single-fcn_collection.php b/single-fcn_collection.php
index a4f5bdcf..115e8bbe 100644
--- a/single-fcn_collection.php
+++ b/single-fcn_collection.php
@@ -15,7 +15,23 @@
  */
 ?>
 
-<?php get_header(); ?>
+<?php
+
+// Header
+get_header( null, array( 'type' => 'fcn_collection' ) );
+
+// Draft or private (if caching is on)?
+$post_status = get_post_status( $post_id );
+
+if (
+  fictioneer_caching_active() &&
+  $post_status !== 'publish' &&
+  ( $_GET['preview'] ?? 0 ) !== 'true'
+) {
+  fictioneer_redirect_to_404();
+}
+
+?>
 
 <main id="main" class="main collection">
   <div class="observer main-observer"></div>
diff --git a/single-fcn_recommendation.php b/single-fcn_recommendation.php
index 822605ca..5fd91a47 100644
--- a/single-fcn_recommendation.php
+++ b/single-fcn_recommendation.php
@@ -11,7 +11,23 @@
  */
 ?>
 
-<?php get_header( null, array( 'type' => 'fcn_recommendation' ) ); ?>
+<?php
+
+// Header
+get_header( null, array( 'type' => 'fcn_recommendation' ) );
+
+// Draft or private (if caching is on)?
+$post_status = get_post_status( $post_id );
+
+if (
+  fictioneer_caching_active() &&
+  $post_status !== 'publish' &&
+  ( $_GET['preview'] ?? 0 ) !== 'true'
+) {
+  fictioneer_redirect_to_404();
+}
+
+?>
 
 <main id="main" class="main recommendation">
   <div class="observer main-observer"></div>
diff --git a/single-fcn_story.php b/single-fcn_story.php
index 73e2991f..4de24722 100644
--- a/single-fcn_story.php
+++ b/single-fcn_story.php
@@ -26,6 +26,17 @@ if ( ! empty( $is_hidden ) ) {
 
 get_header( null, $header_args );
 
+// Draft or private (if caching is on)?
+$post_status = get_post_status( $post_id );
+
+if (
+  fictioneer_caching_active() &&
+  $post_status !== 'publish' &&
+  ( $_GET['preview'] ?? 0 ) !== 'true'
+) {
+  fictioneer_redirect_to_404();
+}
+
 ?>
 
 <main id="main" class="main story">
diff --git a/single-post.php b/single-post.php
index 6038f976..7e0d2d4e 100644
--- a/single-post.php
+++ b/single-post.php
@@ -8,7 +8,23 @@
  */
 ?>
 
-<?php get_header(); ?>
+<?php
+
+// Header
+get_header();
+
+// Draft or private (if caching is on)?
+$post_status = get_post_status( $post_id );
+
+if (
+  fictioneer_caching_active() &&
+  $post_status !== 'publish' &&
+  ( $_GET['preview'] ?? 0 ) !== 'true'
+) {
+  fictioneer_redirect_to_404();
+}
+
+?>
 
 <main id="main" class="main post">
   <div class="observer main-observer"></div>
diff --git a/singular-titleless.php b/singular-titleless.php
index 5ccbf651..3bd11f34 100644
--- a/singular-titleless.php
+++ b/singular-titleless.php
@@ -9,7 +9,23 @@
  */
 ?>
 
-<?php get_header(); ?>
+<?php
+
+// Header
+get_header();
+
+// Draft or private (if caching is on)?
+$post_status = get_post_status( $post_id );
+
+if (
+  fictioneer_caching_active() &&
+  $post_status !== 'publish' &&
+  ( $_GET['preview'] ?? 0 ) !== 'true'
+) {
+  fictioneer_redirect_to_404();
+}
+
+?>
 
 <main id="main" class="main singular">
   <div class="observer main-observer"></div>
diff --git a/singular.php b/singular.php
index e0c9410b..90772f21 100644
--- a/singular.php
+++ b/singular.php
@@ -9,7 +9,23 @@
  */
 ?>
 
-<?php get_header(); ?>
+<?php
+
+// Header
+get_header();
+
+// Draft or private (if caching is on)?
+$post_status = get_post_status( $post_id );
+
+if (
+  fictioneer_caching_active() &&
+  $post_status !== 'publish' &&
+  ( $_GET['preview'] ?? 0 ) !== 'true'
+) {
+  fictioneer_redirect_to_404();
+}
+
+?>
 
 <main id="main" class="main singular">
   <div class="observer main-observer"></div>