The passage of "Spy Mania" in Fallout: New Vegas is not required to complete the storyline. Nevertheless, this quest is recommended for all those who want to support the New California Republic.
During the assignment, you have to identify the spy of the Legion, and then also eliminate the harm done to them. There are several options for completing the quest, and you will definitely learn about each of them by reading this article.
Start
To begin the passage of "Spy Mania" in Fallout: New Vegas, you need to go to the location "Camp McCarran", located near the city of New Vegas. Find James Shue there and question him about everything that happens at the base.
During the dialogue, you will learn about the many problems that affect the inhabitants of McCarran. Including Colonel Shu will inform you of his suspicions regarding the spy, who is leaking information about the movement of the NKR troops to the Legion and the raiders. You can volunteer to help with the solution of the problem, and James, after a little thought, will agree to this. The Colonel will send you to Captain Curtis, who is currently investigating.
Witness Survey
At this stage of the passage of "Spy Mania" in Fallout: New Vegas, you need to talk with the base staff. To begin with, as James Shue advised, talk to Curtis, who is most often found in the same room as the colonel (not far from the stairs).
Having found the captain, inform him of your intentions. Curtis, in turn, will share some information with you and send you to a few more characters who are worth questioning. In particular, you need to talk with Corporal Sterling and Lieutenant Boyd. The first will tell you about the light that burns late at night in the control tower, and the second will give you the key to this tower itself.
Ambush
From this moment, the next part of the Spy Mania quest in Fallout: New Vegas begins. Now you need to go to the tower located in the courtyard of the terminal and ambush the alleged spy there. To do this, hide near the entrance and wait for the dark.
As soon as the clock shows approximately 01:30, you will see a strange man making his way to the tower. Carefully follow him, trying not to make any noise or attract the attention of the suspect. At some point, the person will begin to transmit the message on the radio, and it turns out that this is Captain Curtis, who is actually the secret agent of the Legion. Now you have several options for further completing the Spy Mania quest in Fallout: New Vegas.
Bomb deactivation
Do not rush to do anything, but just listen to Curtis’s message to the very end. So you can find out that the spy mined the monorail, and the bomb explodes in a matter of minutes. Next, you can either kill Curtis and take the deactivation code from him, or quietly leave the tower and go to disarm the explosives.
Be that as it may, you need to rush to the train. Having entered the carriage and searched the ventilation, you will find a bomb in it. If you got a deactivation code from Curtis’s body, then just use it to stop the timer. If you decide to leave the traitor alive, you will need to defuse the bomb yourself. To do this, you must have pumped the skills of "Explosive" (35) and "Science" (45).
Preventing the explosion in any of the above ways, report to Colonel Shu about the mission. This completes the passage of Spy Mania in Fallout: New Vegas.
First bad ending
Well, now about those options when the ending of the quest will not be so rosy. So, being in the tower, you can not listen to Curtis’s message to the end and give yourself away. The traitor will immediately notice you, but he will not admit what he has done.
After that, go to Shu and report on the suspicious behavior of Curtis. The Colonel, with a little thought in his brain, will guess that the spy mined the monorail. True, to run to the train in this option will not work. As soon as you find yourself at the station, an explosion will immediately ring out, and you simply will not have time to do anything. However, the Fallout: New Vegas quest "Spy Mania" will still be considered completed.
Second bad ending
After talking with Boyd and Sterling, you can share with Curtis information about suspicions about the light in the tower. In principle, this is quite normal, because so far the captain is beyond suspicion.
Next you need to wait in the shelter until dark and enter the tower. Only this time, Curtis will be ready for your visit. The traitor, without saying anything superfluous, will immediately attack, and you will either have to kill him or run away.
In any case, return to Shu and report everything that happened. The colonel will guess about the mined monorail, but, as in the previous version, you will not have time to defuse the bomb. Again, the Fallout: New Vegas quest "Spy Mania" will be considered completed.