diff --git a/Gruntfile.js b/Gruntfile.js
index 63561c9ca..be14760e5 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -16,12 +16,9 @@ module.exports = function (grunt) {
         dest: './core/lib/patternlab.js'
       }
     },
-    nodeunit: {
-      all: ['test/*_tests.js']
-    },
     tape: {
       options: {
-        pretty: true,
+        pretty: false,
         output: 'console'
       },
       files: ['test/*_tests.js']
@@ -37,13 +34,12 @@ module.exports = function (grunt) {
   // load all grunt tasks
   grunt.loadNpmTasks('grunt-contrib-concat');
   grunt.loadNpmTasks('grunt-eslint');
-  grunt.loadNpmTasks('grunt-contrib-nodeunit');
   grunt.loadNpmTasks('grunt-tape');
 
   //travis CI task
-  grunt.registerTask('travis', ['nodeunit', 'tape', 'eslint']);
+  grunt.registerTask('travis', ['tape', 'eslint']);
 
   //to be run prior to releasing a version
-  grunt.registerTask('build', ['nodeunit', 'tape', 'eslint', 'concat']);
+  grunt.registerTask('build', ['tape', 'eslint', 'concat']);
 
 };
diff --git a/core/lib/object_factory.js b/core/lib/object_factory.js
index a03e2b400..ff68a9e5b 100644
--- a/core/lib/object_factory.js
+++ b/core/lib/object_factory.js
@@ -3,6 +3,10 @@
 var patternEngines = require('./pattern_engines');
 var path = require('path');
 var extend = require('util')._extend;
+// patternPrefixMatcher is intended to match the leading maybe-underscore,
+// zero or more digits, and maybe-dash at the beginning of a pattern file name we can hack them
+// off and get at the good part.
+var patternPrefixMatcher = /^_?(\d+-)?/;
 
 // Pattern properties
 
@@ -22,7 +26,7 @@ var Pattern = function (relPath, data, patternlab) {
   this.jsonFileData = data || {};
 
   // strip leading "00-" from the file name and flip tildes to dashes
-  this.patternBaseName = this.fileName.replace(/^\d*\-/, '').replace('~', '-'); // 'colors'
+  this.patternBaseName = this.fileName.replace(patternPrefixMatcher, '').replace('~', '-'); // 'colors'
 
   // Fancy name. No idea how this works. 'Colors'
   this.patternName = this.patternBaseName.split('-').reduce(function (val, working) {
@@ -30,13 +34,13 @@ var Pattern = function (relPath, data, patternlab) {
   }, '').trim(); //this is the display name for the ui. strip numeric + hyphen prefixes
 
   // the top-level pattern group this pattern belongs to. 'atoms'
-  this.patternGroup = this.subdir.split(path.sep)[0].replace(/^\d*-/, '');
+  this.patternGroup = this.subdir.split(path.sep)[0].replace(patternPrefixMatcher, '');
 
   //00-atoms if needed
   this.patternType = this.subdir.split(path.sep)[0];
 
   // the sub-group this pattern belongs to.
-  this.patternSubGroup = path.basename(this.subdir).replace(/^\d*-/, ''); // 'global'
+  this.patternSubGroup = path.basename(this.subdir).replace(patternPrefixMatcher, ''); // 'global'
 
   //00-colors if needed
   this.patternSubType = path.basename(this.subdir);
@@ -52,6 +56,10 @@ var Pattern = function (relPath, data, patternlab) {
   // name of the pattern. UPDATE: this.key is now known as this.patternPartial
   this.patternPartial = this.patternGroup + '-' + this.patternBaseName;
 
+  // Let's calculate the verbose name ahead of time! We don't use path.sep here
+  // on purpose. This isn't a file name!
+  this.verbosePartial = this.subdir + '/' + this.fileName;
+
   this.isPattern = true;
   this.isFlatPattern = this.patternGroup === this.patternSubGroup;
   this.patternState = '';
diff --git a/package.json b/package.json
index f8c226666..de331975f 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,6 @@
   "devDependencies": {
     "grunt": "~1.0.1",
     "grunt-contrib-concat": "^1.0.1",
-    "grunt-contrib-nodeunit": "^1.0.0",
     "grunt-eslint": "^18.0.0",
     "grunt-tape": "^0.1.0",
     "tap": "^7.1.2"
diff --git a/test/engine_handlebars_tests.js b/test/engine_handlebars_tests.js
index 7ab183420..cf1fa533e 100644
--- a/test/engine_handlebars_tests.js
+++ b/test/engine_handlebars_tests.js
@@ -15,7 +15,7 @@ if (!engineLoader.handlebars) {
     test.end()
   })
   return
-};
+}
 
 // fake pattern lab constructor:
 // sets up a fake patternlab object, which is needed by the pattern processing
@@ -70,6 +70,7 @@ function testFindPartials(test, partialTests) {
   test.end();
 }
 
+
 tap.test('hello world handlebars pattern renders', function (test) {
   test.plan(1);
 
@@ -200,3 +201,24 @@ tap.test('find_pattern_partials finds handlebars block partials', function (test
     '{{#> myPartial }}'
   ]);
 });
+
+tap.test('hidden handlebars patterns can be called by their nice names', function (test) {
+  const util = require('./util/test_utils.js');
+
+  //arrange
+  const testPatternsPath = path.resolve(__dirname, 'files', '_handlebars-test-patterns');
+  const pl = util.fakePatternLab(testPatternsPath);
+  var pattern_assembler = new pa();
+
+  var hiddenPatternPath = path.join('00-atoms', '00-global', '_00-hidden.hbs');
+  var hiddenPattern = pattern_assembler.process_pattern_iterative(hiddenPatternPath, pl);
+  pattern_assembler.process_pattern_recursive(hiddenPatternPath, pl);
+
+  var testPatternPath = path.join('00-molecules', '00-global', '00-hidden-pattern-tester.hbs');
+  var testPattern = pattern_assembler.process_pattern_iterative(testPatternPath, pl);
+  pattern_assembler.process_pattern_recursive(testPatternPath, pl);
+
+  //act
+  test.equals(util.sanitized(testPattern.render()), util.sanitized('Here\'s the hidden atom: [I\'m the hidden atom\n]\n'));
+  test.end();
+});
diff --git a/test/engine_underscore_tests.js b/test/engine_underscore_tests.js
index 178db6d0b..8c245bdf4 100644
--- a/test/engine_underscore_tests.js
+++ b/test/engine_underscore_tests.js
@@ -100,3 +100,23 @@ tap.test('findPartial return the ID of the partial, given a whole partial call',
 
 });
 
+tap.test('hidden underscore patterns can be called by their nice names', function(test){
+    const util = require('./util/test_utils.js');
+
+    //arrange
+    const testPatternsPath = path.resolve(__dirname, 'files', '_underscore-test-patterns');
+    const pl = util.fakePatternLab(testPatternsPath);
+    var pattern_assembler = new pa();
+
+    var hiddenPatternPath = path.join('00-atoms', '00-global', '_00-hidden.html');
+    var hiddenPattern = pattern_assembler.process_pattern_iterative(hiddenPatternPath, pl);
+    pattern_assembler.process_pattern_recursive(hiddenPatternPath, pl);
+
+    var testPatternPath = path.join('00-molecules', '00-global', '00-hidden-pattern-tester.html');
+    var testPattern = pattern_assembler.process_pattern_iterative(testPatternPath, pl);
+    pattern_assembler.process_pattern_recursive(testPatternPath, pl);
+
+    //act
+    test.equals(util.sanitized(testPattern.render()), util.sanitized('Here\'s the hidden atom: [I\'m the hidden atom\n]\n'));
+    test.end();
+  });
diff --git a/test/files/_handlebars-test-patterns/00-atoms/00-global/_00-hidden.hbs b/test/files/_handlebars-test-patterns/00-atoms/00-global/_00-hidden.hbs
new file mode 100644
index 000000000..b2c93a13e
--- /dev/null
+++ b/test/files/_handlebars-test-patterns/00-atoms/00-global/_00-hidden.hbs
@@ -0,0 +1 @@
+I'm the hidden atom
diff --git a/test/files/_handlebars-test-patterns/00-molecules/00-global/00-hidden-pattern-tester.hbs b/test/files/_handlebars-test-patterns/00-molecules/00-global/00-hidden-pattern-tester.hbs
new file mode 100644
index 000000000..ce4a0c864
--- /dev/null
+++ b/test/files/_handlebars-test-patterns/00-molecules/00-global/00-hidden-pattern-tester.hbs
@@ -0,0 +1 @@
+Here's the hidden atom: [{{> atoms-hidden}}]
diff --git a/test/files/_patterns/00-test/15-hidden-pattern-tester.mustache b/test/files/_patterns/00-test/15-hidden-pattern-tester.mustache
new file mode 100644
index 000000000..5598f783f
--- /dev/null
+++ b/test/files/_patterns/00-test/15-hidden-pattern-tester.mustache
@@ -0,0 +1,2 @@
+Hello there!
+Here's the hidden atom: [{{> test-hidden-pattern}}]
diff --git a/test/files/_patterns/00-test/_00-hidden-pattern.mustache b/test/files/_patterns/00-test/_00-hidden-pattern.mustache
new file mode 100644
index 000000000..0f5831922
--- /dev/null
+++ b/test/files/_patterns/00-test/_00-hidden-pattern.mustache
@@ -0,0 +1 @@
+This is the hidden atom
\ No newline at end of file
diff --git a/test/files/_underscore-test-patterns/00-atoms/00-global/_00-hidden.html b/test/files/_underscore-test-patterns/00-atoms/00-global/_00-hidden.html
new file mode 100644
index 000000000..b2c93a13e
--- /dev/null
+++ b/test/files/_underscore-test-patterns/00-atoms/00-global/_00-hidden.html
@@ -0,0 +1 @@
+I'm the hidden atom
diff --git a/test/files/_underscore-test-patterns/00-molecules/00-global/00-hidden-pattern-tester.html b/test/files/_underscore-test-patterns/00-molecules/00-global/00-hidden-pattern-tester.html
new file mode 100644
index 000000000..fe3beef68
--- /dev/null
+++ b/test/files/_underscore-test-patterns/00-molecules/00-global/00-hidden-pattern-tester.html
@@ -0,0 +1 @@
+Here's the hidden atom: [<%=_.renderNamedPartial('atoms-hidden', obj)%>]
diff --git a/test/pattern_assembler_tests.js b/test/pattern_assembler_tests.js
index f03aeb7ae..09b60532d 100644
--- a/test/pattern_assembler_tests.js
+++ b/test/pattern_assembler_tests.js
@@ -6,6 +6,8 @@ var pa = require('../core/lib/pattern_assembler');
 var Pattern = require('../core/lib/object_factory').Pattern;
 var path = require('path');
 
+
+
 tap.test('process_pattern_recursive recursively includes partials', function(test) {
 
   //tests inclusion of partial that will be discovered by diveSync later in iteration than parent
@@ -649,6 +651,27 @@ tap.test('addPattern - adds pattern template to patternlab partial object if ext
   test.equals(patternlab.patterns.length, 1);
   test.equals(patternlab.partials['test-bar'] != undefined, true);
   test.equals(patternlab.partials['test-bar'], 'bar');
-  test.done();
+  test.end();
 });
 
+tap.test('hidden patterns can be called by their nice names', function(test){
+  var util = require('./util/test_utils.js');
+
+  //arrange
+  var testPatternsPath = path.resolve(__dirname, 'files', '_patterns');
+  var pl = util.fakePatternLab(testPatternsPath);
+  var pattern_assembler = new pa();
+
+  //act
+  var hiddenPatternPath = path.join('00-test', '_00-hidden-pattern.mustache');
+  var hiddenPattern = pattern_assembler.process_pattern_iterative(hiddenPatternPath, pl);
+  pattern_assembler.process_pattern_recursive(hiddenPatternPath, pl);
+
+  var testPatternPath = path.join('00-test', '15-hidden-pattern-tester.mustache');
+  var testPattern = pattern_assembler.process_pattern_iterative(testPatternPath, pl);
+  pattern_assembler.process_pattern_recursive(testPatternPath, pl);
+
+  //assert
+  test.equals(util.sanitized(testPattern.render()), util.sanitized('Hello there! Here\'s the hidden atom: [This is the hidden atom]'), 'hidden pattern rendered output not as expected');
+  test.end();
+});
diff --git a/test/util/test_utils.js b/test/util/test_utils.js
new file mode 100644
index 000000000..652c52d5e
--- /dev/null
+++ b/test/util/test_utils.js
@@ -0,0 +1,37 @@
+"use strict";
+
+module.exports = {
+
+  // fake pattern lab constructor:
+  // sets up a fake patternlab object, which is needed by the pattern processing
+  // apparatus.
+  fakePatternLab: (testPatternsPath) => {
+    var fpl = {
+      partials: {},
+      patterns: [],
+      footer: '',
+      header: '',
+      listitems: {},
+      listItemArray: [],
+      data: {
+        link: {}
+      },
+      config: require('../../patternlab-config.json'),
+      package: {}
+    };
+
+    // patch the pattern source so the pattern assembler can correctly determine
+    // the "subdir"
+    fpl.config.paths.source.patterns = testPatternsPath;
+
+    return fpl;
+  },
+
+  /**
+   * Strip out control characters from output if needed so make comparisons easier
+   * @param output - the template to strip
+   */
+  sanitized: (outputTemplate) => {
+    return outputTemplate.replace(/\n/g, ' ').replace(/\r/g, ' ').replace(/\s\s+/g, ' ').trim();
+  }
+};