diff --git a/lib/mutant.rb b/lib/mutant.rb
index fccb8010..82982a4b 100644
--- a/lib/mutant.rb
+++ b/lib/mutant.rb
@@ -12,6 +12,7 @@ require 'ice_nine'
 require 'ice_nine/core_ext/object'
 require 'diff/lcs'
 require 'diff/lcs/hunk'
+require 'rspec'
 
 # Library namespace
 module Mutant
diff --git a/lib/mutant/killer/forking.rb b/lib/mutant/killer/forking.rb
index 7c598dde..95e43710 100644
--- a/lib/mutant/killer/forking.rb
+++ b/lib/mutant/killer/forking.rb
@@ -1,38 +1,39 @@
 module Mutant
   class Killer
 
-#   class Forked < self
-#     def initialize(killer, mutation)
-#       @killer = killer
-#       super(mutation)
-#     end
+    class Forked < self
+      def initialize(killer, mutation)
+        @killer = killer
+        super(mutation)
+      end
 
-#     def type
-#       @killer.type
-#     end
+      def type
+        @killer.type
+      end
 
-#     def run
-#       fork do
-#         @killer.new(@mutation)
-#       end
+      def run
+        fork do
+          @killer.new(@mutation)
+        end
 
-#       status = Process.wait2.last
-#       status.exitstatus.zero?
-#     end
-#   end
+        status = Process.wait2.last
+        status.exitstatus.zero?
+      end
+    end
 
-#   class Forking < self
-#     include Equalizer.new(:killer)
+    class Forking < self
+      include Equalizer.new(:killer)
 
-#     attr_reader :killer
+      attr_reader :killer
 
-#     def initialize(strategy)
-#       @killer = killer
-#     end
+      def initialize(strategy)
+        @killer = killer
+      end
+
+      def new(mutation)
+        Forked.new(@killer, mutation)
+      end
+    end
 
-#     def run(mutation)
-#       Forked.new(@killer, mutation)
-#     end
-#   end
   end
 end
diff --git a/lib/mutant/killer/rspec.rb b/lib/mutant/killer/rspec.rb
index eea11ec5..32c3cca4 100644
--- a/lib/mutant/killer/rspec.rb
+++ b/lib/mutant/killer/rspec.rb
@@ -62,12 +62,7 @@ module Mutant
       # @api private
       #
       def run_rspec
-        require 'rspec'
         self.class.nest do 
-          require './spec/spec_helper.rb'
-          if RSpec.world.shared_example_groups.empty?
-            Dir['spec/{support,shared}/**/*.rb'].each { |f| load(f) }
-          end
           ::RSpec::Core::Runner.run(command_line_arguments, @error_stream, @output_stream)
         end
       end
diff --git a/lib/mutant/strategy.rb b/lib/mutant/strategy.rb
index a7ae5b7f..6f968131 100644
--- a/lib/mutant/strategy.rb
+++ b/lib/mutant/strategy.rb
@@ -15,7 +15,7 @@ module Mutant
     end
 
     def self.killer
-      self::KILLER
+      Killer::Forking.new(self::KILLER)
     end
 
     class Rspec < self
diff --git a/mutant b/mutant
index 0779a7c5..1fc4e310 100755
--- a/mutant
+++ b/mutant
@@ -1,7 +1,6 @@
 #!/usr/bin/env ruby
 
 require 'mutant'
-require 'mutant/cli'
 
 namespace =
   if File.basename($0) == 'zombie'
diff --git a/mutant.gemspec b/mutant.gemspec
index a5dde508..bd787523 100644
--- a/mutant.gemspec
+++ b/mutant.gemspec
@@ -13,6 +13,7 @@ Gem::Specification.new do |gem|
   gem.files            = `git ls-files`.split("\n")
   gem.test_files       = `git ls-files -- spec`.split("\n")
   gem.extra_rdoc_files = %w[TODO]
+  gem.executable       = [ 'mutant' ]
 
   gem.add_runtime_dependency('to_source',           '~> 0.1.3')
   gem.add_runtime_dependency('ice_nine',            '~> 0.5.0')