diff --git a/client/main.lua b/client/main.lua
index e402de0..fa467b5 100644
--- a/client/main.lua
+++ b/client/main.lua
@@ -83,6 +83,8 @@ Citizen.CreateThread(function()
             _secondMissionLogic()
         elseif isInThirdMission() and timeForNextMission() then
             _thirdMissionLogic()
+        elseif isInFourthMission() and timeForNextMission() then
+            _fourthMissionLogic()
         else
             Citizen.Wait(20000) -- wait 20 secs
         end
diff --git a/client/missions/mission4.lua b/client/missions/mission4.lua
new file mode 100644
index 0000000..403984b
--- /dev/null
+++ b/client/missions/mission4.lua
@@ -0,0 +1,60 @@
+local numberAdded = false
+local fourthMissionDone = false
+local fourthMissionStarted = false
+local fourthMissionIntroDone = false
+
+--- Event handler for messages sent to the blocked contact (fourth mission)
+RegisterNetEvent(eventNamespace .. blockedContact.namespace)
+AddEventHandler(eventNamespace .. blockedContact.namespace, function(anon, message)
+    if isInFourthMission() then
+        local responseMsg = ""
+        if anon then
+            responseMsg = responseMsg .. _U('intro_msg_text_anon_obv')
+        end
+        if message == Locations.Bank.BackOfficePc1.machine.user then
+            completeFourthMission()
+            fourthMissionDone = true;
+        else
+            ESX.ShowAdvancedNotification(blockedContact.name, _U('mission_4_msg_subtitle_re'), -- title, subtitle
+                    responseMsg .. _U('mission_4_msg_text_fail'), -- message
+                    "CHAR_BLOCKED", 1) -- contact photo, symbol
+        end
+    end
+end)
+
+function _fourthMissionLogic()
+    if (not numberAdded and not fourthMissionDone) then
+        if not fourthMissionStarted then
+            TriggerEvent('esx_phone:addSpecialContact', blockedContact.name, blockedContact.number, blockedContact.base64Icon)
+            numberAdded = true
+            fourthMissionStarted = true
+        elseif fourthMissionStarted then
+            TriggerEvent('esx_phone:addSpecialContact', blockedContact.name, blockedContact.number, blockedContact.base64Icon)
+            numberAdded = true
+        end
+    end
+    if fourthMissionStarted and not fourthMissionDone and not fourthMissionIntroDone then
+        ESX.ShowAdvancedNotification(blockedContact.name, _U('mission_4_msg_subtitle'), -- title, subtitle
+                _U('mission_4_msg_text_start'), -- message
+                "CHAR_BLOCKED", 1) -- contact photo, symbol
+        fourthMissionIntroDone = true
+    end
+end
+
+--- Completes the third mission and advances the job rank
+function completeFourthMission()
+    ESX.ShowAdvancedNotification(blockedContact.name, _U('mission_4_msg_subtitle_re'), -- title, subtitle
+            responseMsg .. _U('mission_4_msg_text_final'), -- message
+            "CHAR_BLOCKED", 1) -- contact photo, symbol
+    Citizen.Wait(1500)
+    TriggerServerEvent(eventNamespace .. "advJob", 4)
+    Citizen.Wait(1500)
+    TriggerEvent('esx_phone:removeSpecialContact', blockedContact.number)
+    TriggerEvent(eventNamespace .. "getNextTriggerTime")
+end
+
+--- Checks if player is in fourth mission.
+-- @return true if job is hacker and rank is 3
+function isInFourthMission()
+    return isHacker() and ESX.GetPlayerData().job.grade_name == 'pentester'
+end
diff --git a/fxmanifest.lua b/fxmanifest.lua
index a01051e..6109fbd 100644
--- a/fxmanifest.lua
+++ b/fxmanifest.lua
@@ -35,6 +35,7 @@ client_scripts {
     'client/missions/mission1.lua',
     'client/missions/mission2.lua',
     'client/missions/mission3.lua',
+    'client/missions/mission4.lua',
 }
 
 server_scripts {
diff --git a/locales/en.lua b/locales/en.lua
index 59df469..fb59aa2 100644
--- a/locales/en.lua
+++ b/locales/en.lua
@@ -46,4 +46,10 @@ Locales['en'] = {
     ['mission_3_msg_subtitle'] = "Pacific Standard",
     ['mission_3_msg_subtitle_re'] = "Re: Pacific Standard",
     ['mission_3_msg_text_start'] = "Hi there. I heard that you know your way around computers. I want to spy the vault combination of the Pacific Standard by using the microphone of a PC nearby. To allow my worm to find the correct host, I need the IP address. GO!",
+
+    ['mission_4_msg_text_final'] = "Great, I didn't expect this to work!",
+    ['mission_4_msg_text_fail'] = "Nope, that one didn't work...",
+    ['mission_4_msg_subtitle'] = "Free Real Estate",
+    ['mission_4_msg_subtitle_re'] = "Re: Free Real Estate",
+    ['mission_4_msg_text_start'] = "When I was at the bank for consultation a few weeks back, I noticed that an employee can simply change the price of anything the bank sells. I want this nice house, you know what I'm planning. I managed to memorize the password, but I don't know the username to log into the computer remotely. I only know the PC had the number '1-1-1' labelled on it.",
 }