diff --git a/app/encounter-builder/monster-table.html b/app/encounter-builder/monster-table.html
index c3f72532..e5825bca 100644
--- a/app/encounter-builder/monster-table.html
+++ b/app/encounter-builder/monster-table.html
@@ -33,6 +33,13 @@
 				</th>
 			</tr>
 		</thead>
+		<tbody>
+			<tr class="monster-table--warning-row" ng-if="vm.filters.search && (vm.monsters | countHiddenMonstersFilter:vm.filters) > 0">
+				<td colspan="7" class="monster-table--filter-warning-cell">
+					{{ vm.monsters | countHiddenMonstersFilter:vm.filters }} monsters hidden by filters or in unselected sources
+				</td>
+			</tr>
+		</tbody>
 		<tbody>
 			<tr
 				dir-paginate="monster in vm.monsters | monstersFilter:vm.filters | itemsPerPage: vm.filters.pageSize"
diff --git a/app/encounter-builder/monster-table.scss b/app/encounter-builder/monster-table.scss
index 24849bfd..b020ba91 100644
--- a/app/encounter-builder/monster-table.scss
+++ b/app/encounter-builder/monster-table.scss
@@ -43,6 +43,12 @@
 			}
 		}
 	}
+
+	&--filter-warning-cell {
+		background-color: darken($state-warning-bg, 5%);
+		text-align: center;
+		font-style: italic;
+	}
 }
 
 @media (max-width: 768px) {
@@ -78,7 +84,16 @@
 		}
 	}
 
+	.monster-table--warning-row {
+		display: block;
+		position: relative;
+		&:not(:last-child) {
+			border-bottom: 1px solid #ddd;
+		}
+	}
+
 	// Cells; double-classed to override precedence of libraries so borders are actually removed.
+	.monster-table--filter-warning-cell.monster-table--filter-warning-cell,
 	.monster-table--button-cell.monster-table--button-cell,
 	.monster-table--name-cell.monster-table--name-cell,
 	.monster-table--cr-cell.monster-table--cr-cell,
@@ -92,6 +107,10 @@
 		margin: 0 $spacing;
 	}
 
+	.monster-table--filter-warning-cell.monster-table--filter-warning-cell {
+		width: 100%;
+	}
+
 	.monster-table--name-cell.monster-table--name-cell {
 		display: block;
 		font-size: 1.25em;
diff --git a/app/filters/count-hidden-monsters.filter.js b/app/filters/count-hidden-monsters.filter.js
new file mode 100644
index 00000000..8283ff86
--- /dev/null
+++ b/app/filters/count-hidden-monsters.filter.js
@@ -0,0 +1,23 @@
+(function() {
+	"use strict";
+
+	angular.module("app")
+		.filter("countHiddenMonstersFilter", CountHiddenMonsters);
+
+	CountHiddenMonsters.$inject = ["monsterFactory"];
+
+	function CountHiddenMonsters(monsterLib) {
+		return function ( input, filters ) {
+			if (!input) return 0;
+			var output = 0, i;
+
+			for ( i = 0; i < input.length; i++ ) {
+				if ( monsterLib.checkIsMonsterFoundAndFiltered(input[i], filters) ) {
+					output++;
+				}
+			}
+
+			return output;
+		};
+	}
+})();
diff --git a/index.html b/index.html
index bee75a96..6bfb4f19 100644
--- a/index.html
+++ b/index.html
@@ -57,6 +57,7 @@
 	<script src="app/encounter-manager/encounter-manager.controller.js"></script>
 	<script src="app/encounter-manager/manager-row.component.js"></script>
 	<script src="app/encounter-manager/manager-row.controller.js"></script>
+	<script src="app/filters/count-hidden-monsters.filter.js"></script>
 	<script src="app/filters/filter-and-sort-monsters.filter.js"></script>
 	<script src="app/filters/positive-and-negative-numbers.filter.js"></script>
 	<script src="app/filters/sort-encounter.filter.js"></script>
diff --git a/scripts/monsterfactory.js b/scripts/monsterfactory.js
index 93b1e37b..34e6ed00 100644
--- a/scripts/monsterfactory.js
+++ b/scripts/monsterfactory.js
@@ -8,6 +8,7 @@
 	function MonsterFactory(alignments, crInfo) {
 		var factory = {
 			checkMonster: checkMonster,
+			checkIsMonsterFoundAndFiltered: checkIsMonsterFoundAndFiltered,
 			Monster: Monster,
 		};
 
@@ -159,6 +160,14 @@
 		};
 		var lastRegex = regexCache[""];
 		function checkMonster(monster, filters, args) {
+			return !isFiltered(monster, filters, args) && isNameMatched(monster, filters);
+		}
+
+		function checkIsMonsterFoundAndFiltered(monster, filters, args) {
+			return isNameMatched(monster, filters) && isFiltered(monster, filters, args);
+		}
+
+		function isFiltered(monster, filters, args) {
 			args = args || {};
 
 			var legendaryMap = {
@@ -171,52 +180,56 @@
 				var legendaryFilter = legendaryMap[filters.legendary];
 
 				if (legendaryFilter) {
-					if (!monster[legendaryFilter]) return false;
+					if (!monster[legendaryFilter]) return true;
 				} else  {
-					if (monster.legendary || monster.lair) return false;
+					if (monster.legendary || monster.lair) return true;
 				}
 			}
 
 			if ( filters.type && monster.type !== filters.type ) {
-				return false;
+				return true;
 			}
 
 			if ( filters.size && monster.size !== filters.size ) {
-				return false;
+				return true;
 			}
 
 			if ( args.nonUnique && monster.unique ) {
-				return false;
+				return true;
 			}
 
 			if ( filters.alignment ) {
 				if ( !monster.alignment ) {
-					return false;
+					return true;
 				}
 
 				if ( ! (filters.alignment.flags & monster.alignment.flags) ) {
-					return false;
+					return true;
 				}
 			}
 
 			if ( !args.skipCrCheck ) {
 				if ( filters.minCr && monster.cr.numeric < filters.minCr ) {
-					return false;
+					return true;
 				}
 
 				if ( filters.maxCr && monster.cr.numeric > filters.maxCr ) {
-					return false;
+					return true;
 				}
 			}
 
 			if ( filters.environment && monster.environments.indexOf(filters.environment) === -1 ) {
-				return false;
+				return true;
 			}
 
 			if ( !isInSource(monster, filters.source) ) {
-				return false;
+				return true;
 			}
 
+			return false;
+		}
+
+		function isNameMatched(monster, filters) {
 			if ( filters.search ) {
 				let checkRegex = filters.search.match(/^\/(.*?)\/?$/);
 				if ( checkRegex ) {
@@ -254,7 +267,6 @@
 				} else if ( monster.searchable.indexOf(filters.search.toLowerCase()) === -1 ) {
 					return false;
 				}
-
 			}
 
 			return true;
diff --git a/styles/style.css b/styles/style.css
index 5136106f..287e4f07 100755
--- a/styles/style.css
+++ b/styles/style.css
@@ -7557,6 +7557,10 @@ button.close {
       display: none; }
     .monster-table--source-name__long {
       display: inline; } }
+  .monster-table--filter-warning-cell {
+    background-color: #faf2cc;
+    text-align: center;
+    font-style: italic; }
 
 @media (max-width: 768px) {
   .monster-table--table {
@@ -7572,6 +7576,12 @@ button.close {
     min-height: 100px; }
     .monster-table--row:not(:last-child) {
       border-bottom: 1px solid #ddd; }
+  .monster-table--warning-row {
+    display: block;
+    position: relative; }
+    .monster-table--warning-row:not(:last-child) {
+      border-bottom: 1px solid #ddd; }
+  .monster-table--filter-warning-cell.monster-table--filter-warning-cell,
   .monster-table--button-cell.monster-table--button-cell,
   .monster-table--name-cell.monster-table--name-cell,
   .monster-table--cr-cell.monster-table--cr-cell,
@@ -7583,6 +7593,8 @@ button.close {
     border: 0;
     padding: 0;
     margin: 0 3px; }
+  .monster-table--filter-warning-cell.monster-table--filter-warning-cell {
+    width: 100%; }
   .monster-table--name-cell.monster-table--name-cell {
     display: block;
     font-size: 1.25em; }