diff --git a/lib/stendhal/mocks.rb b/lib/stendhal/mocks.rb
index e8ea09c..4208425 100644
--- a/lib/stendhal/mocks.rb
+++ b/lib/stendhal/mocks.rb
@@ -1,4 +1,5 @@
 require 'stendhal/mocks/test_double'
+require 'stendhal/mocks/spyable'
 
 module Stendhal
   module Mocks
diff --git a/lib/stendhal/mocks/spyable.rb b/lib/stendhal/mocks/spyable.rb
new file mode 100644
index 0000000..4168a84
--- /dev/null
+++ b/lib/stendhal/mocks/spyable.rb
@@ -0,0 +1,25 @@
+module Stendhal
+  module Mocks
+    module Spyable
+      # def included(base)
+      #   base.send(:include, InstanceMethods)
+      # end
+
+      # module InstanceMethods
+        def spy(method)
+          metaclass = (class << self;self;end)
+          metaclass.send(:alias_method, :"__original_#{method}", method.to_sym)
+          metaclass.send(:undef_method, method.to_sym)
+          metaclass.class_eval <<EOT
+            def #{method}(*args, &block)
+              puts "spy says... called #{method}!"
+              @__verifier.add_call(:#{method},*args,&block) if nil
+              __original_#{method}(*args,&block)
+            end
+EOT
+        end
+      # end
+
+    end
+  end
+end
diff --git a/spec/stendhal/spyable_spec.rb b/spec/stendhal/spyable_spec.rb
new file mode 100644
index 0000000..d41bf4c
--- /dev/null
+++ b/spec/stendhal/spyable_spec.rb
@@ -0,0 +1,20 @@
+require 'spec_helper'
+
+class MyClass < Array
+  include Stendhal::Mocks::Spyable
+end
+
+module Stendhal
+  module Mocks
+    describe "a Spyable class" do
+
+      subject { MyClass.new([1,2,3]) }
+
+      it 'acts as a proxy for the target' do
+        subject.spy(:length) 
+        subject.length
+      end
+
+    end
+  end
+end