diff --git a/lib/pry/default_commands/introspection.rb b/lib/pry/default_commands/introspection.rb
index 033b85b9..197889ae 100644
--- a/lib/pry/default_commands/introspection.rb
+++ b/lib/pry/default_commands/introspection.rb
@@ -8,8 +8,18 @@ class Pry
       attr_accessor :module_object
 
       def module_object
-        name = args.first
-        @module_object ||= WrappedModule.from_str(name, target)
+        if @module_object
+          @module_object
+        else
+          name = args.first
+          @module_object = WrappedModule.from_str(name, target)
+          if @module_object
+            sup = @module_object.ancestors.select do |anc|
+              anc.class == @module_object.wrapped.class
+            end[opts[:super]]
+            @module_object = sup ? Pry::WrappedModule(sup) : nil
+          end
+        end
       end
 
       # @param [String]
@@ -127,7 +137,7 @@ class Pry
           opt.on :f, :flood, "Do not use a pager to view text longer than one screen."
           opt.on :a, :all, "Show docs for all definitions and monkeypatches of the module/class"
         end
-
+        
         def process_sourcable_object
           name = args.first
           object = target.eval(name)
@@ -145,6 +155,7 @@ class Pry
         end
 
         def process_module
+          raise Pry::CommandError, "No documentation found." if module_object.nil?
           if opts.present?(:all)
             all_modules
           else
@@ -274,6 +285,7 @@ class Pry
           e.g: `show-source Pry#rep`         # source for Pry#rep method
           e.g: `show-source Pry`             # source for Pry class
           e.g: `show-source Pry -a`          # source for all Pry class definitions (all monkey patches)
+          e.g: `show-source Pry --super      # source for superclass of Pry (Object class)
 
           https://github.com/pry/pry/wiki/Source-browsing#wiki-Show_method
         BANNER
@@ -323,6 +335,7 @@ class Pry
         end
 
         def process_module
+          raise Pry::CommandError, "No documentation found." if module_object.nil?
           if opts.present?(:all)
             all_modules
           else
diff --git a/lib/pry/wrapped_module.rb b/lib/pry/wrapped_module.rb
index 73fd03c6..6d1437cf 100644
--- a/lib/pry/wrapped_module.rb
+++ b/lib/pry/wrapped_module.rb
@@ -17,7 +17,6 @@ class Pry
     include Pry::Helpers::DocumentationHelpers
 
     attr_reader :wrapped
-    private :wrapped
 
     # Convert a string to a module.
     #
diff --git a/test/test_default_commands/test_show_source.rb b/test/test_default_commands/test_show_source.rb
index 368bf495..b379239b 100644
--- a/test/test_default_commands/test_show_source.rb
+++ b/test/test_default_commands/test_show_source.rb
@@ -251,12 +251,23 @@ if !mri18_and_no_real_source_location?
 
     describe "on modules" do
       before do
-        class ShowSourceTestClass
+        class ShowSourceTestSuperClass
+          def alpha
+          end
+        end
+
+        class ShowSourceTestClass<ShowSourceTestSuperClass
+          def alpha
+          end
+        end
+
+        module ShowSourceTestSuperModule
           def alpha
           end
         end
 
         module ShowSourceTestModule
+          include ShowSourceTestSuperModule
           def alpha
           end
         end
@@ -273,35 +284,61 @@ if !mri18_and_no_real_source_location?
       end
 
       after do
+        Object.remove_const :ShowSourceTestSuperClass
         Object.remove_const :ShowSourceTestClass
         Object.remove_const :ShowSourceTestClassWeirdSyntax
+        Object.remove_const :ShowSourceTestSuperModule
         Object.remove_const :ShowSourceTestModule
         Object.remove_const :ShowSourceTestModuleWeirdSyntax
       end
 
       describe "basic functionality, should find top-level module definitions" do
         it 'should show source for a class' do
-          mock_pry("show-source ShowSourceTestClass").should =~ /class ShowSourceTest.*?def alpha/m
+          mock_pry("show-source ShowSourceTestClass").should =~ /class ShowSourceTestClass.*?def alpha/m
+        end
+
+        it 'should show source for a super class' do
+          mock_pry("show-source -s ShowSourceTestClass").should =~ /class ShowSourceTestSuperClass.*?def alpha/m
         end
 
         it 'should show source for a module' do
           mock_pry("show-source ShowSourceTestModule").should =~ /module ShowSourceTestModule/
         end
 
+        it 'should show source for an ancestor module' do
+          mock_pry("show-source -s ShowSourceTestModule").should =~ /module ShowSourceTestSuperModule/
+        end
+
         it 'should show source for a class when Const = Class.new syntax is used' do
           mock_pry("show-source ShowSourceTestClassWeirdSyntax").should =~ /ShowSourceTestClassWeirdSyntax = Class.new/
         end
 
+        it 'should show source for a super class when Const = Class.new syntax is used' do
+          mock_pry("show-source -s ShowSourceTestClassWeirdSyntax").should =~ /class Object/
+        end
+
         it 'should show source for a module when Const = Module.new syntax is used' do
           mock_pry("show-source ShowSourceTestModuleWeirdSyntax").should =~ /ShowSourceTestModuleWeirdSyntax = Module.new/
         end
       end
 
       if !Pry::Helpers::BaseHelpers.mri_18?
+        before do
+          mock_pry("class Dog", "def woof", "end", "end")
+          mock_pry("class TobinaMyDog<Dog", "def woof", "end", "end")
+        end
+
+        after do
+          Object.remove_const :Dog
+          Object.remove_const :TobinaMyDog
+        end
+
         describe "in REPL" do
           it 'should find class defined in repl' do
-            mock_pry("class TobinaMyDog", "def woof", "end", "end", "show-source TobinaMyDog").should =~ /class TobinaMyDog/
-            Object.remove_const :TobinaMyDog
+            mock_pry("show-source TobinaMyDog").should =~ /class TobinaMyDog/
+          end
+          it 'should find superclass defined in repl' do
+            mock_pry("show-source -s TobinaMyDog").should =~ /class Dog/
           end
         end
       end