Stack overflow exception when moving methods to other classes

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C#

Hello,

I'm working on a C# game in a console application. I tried to move my "commands" that you can use into separate class files, and now they produce a StackOverflow error. Rough.

I have 4 Files: Program.cs (Handles the Game loop and method input and processing), BasicCommands(Holds 5 Methods for commands), SpeechCommands(Same as Basic except specifically for speech strings) and Character (character constructor/object for the player character and NPCs).

namespace DigitalLove
{
    public class Program
    {
        public List<string> validWords = new List<string> { "look",
            "move",
            "check status",
            "hallway",
            "dance room",
            "bathroom",
            "punch bowl",
            "talk",
            "the scrawny boy",
            "the tall boy",
            "the girl",
            "take",
            "cup of punch",
            "the blond boy",
            "Rock",
            "Blues",
            "Forte",
            "Roll"
            };
        public List<string> TalkingResponse = new List<string>
        {
            "uh...hi.",
            "of course not.",
            "yes",
            "no",
            "just here to have a good time.",
            "looking for people",

        };
        public string[] Locations = { "Dance Room", "Bathroom", "Hallway", "Punch Bowl" };
        public string Location,
        response,
        PlayerName,
        HeldItem;
        public Character Rockman;
        public Character Blues;
        public Character Forte;
        public Character Roll;
        public Character Player;
        public bool HoldingItem;
        SpeechCommands Command = new SpeechCommands();
        BasicCommands Basic = new BasicCommands();
        static void Main(string[] args)
        {
            Program Game = new Program();
            Game.Game();
        }
        public void Game()
        {
            //Game title here
            Console.WriteLine("Press enter to begin!");
            Console.ReadKey();
            Console.Clear();
            Console.WriteLine("What is your name?");
            PlayerName = Console.ReadLine();
            while (PlayerName == "")
            {
                Console.WriteLine("Please enter a name!");
                PlayerName = Console.ReadLine();
            }
            Console.WriteLine("Thank you, " + PlayerName + ". Good luck!");
            Console.WriteLine("Press enter to continue. . .");
            Console.ReadKey();
            Console.Clear();
            Location = Locations[0];
            Rockman = new Character();
            Blues = new Character();
            Forte = new Character();
            Roll = new Character();
            Player = new Character();

            //Player definitons
            Player.CharacterName = PlayerName;
            Player.Location = Location;

            //Rockman definitons
            Rockman.CharacterName = "Rock";
            Rockman.Location = Locations[0];
            Rockman.MetTrigger = false;

            //Blues definitions
            Blues.CharacterName = "Blues";
            Blues.Location = Locations[0];
            Blues.MetTrigger = false;

            //Forte definitions
            Forte.CharacterName = "Forte";
            Forte.Location = Locations[1];
            Forte.MetTrigger = false;

            //Roll definitons
            Roll.CharacterName = "Roll";
            Roll.Location = Locations[3];
            Roll.MetTrigger = false;
            Console.WriteLine("You stand near the edge of the dance, shying away from everyone else who seems to be having a very good time." + "\n" +
                "You would love to join, but no one has approached you yet! You feel awkward trying to approach anyone, despite the numerous amount of people in the same position.");
            Console.ForegroundColor = ConsoleColor.Cyan;
            Console.WriteLine("Command List: Look, Move, Check Status");
            Console.ResetColor();
            GetInput();
        }
        public string GetInput()
        {
            var Test = true;

            while (Test)
            {
                response = Console.ReadLine().ToLower();
                if (validWords.Contains(response))
                {
                    Test = false;
                    ProcessInput(response);
                }
                else
                {
                    Console.WriteLine("I'm sorry, I do not understand.");
                }
            }
            return response;
        }

        public void ProcessInput(string response)
        {
            switch (response)
            {
                case "look":
                Basic.LookCommand();
                break;
                case "move":
                Basic.MoveCommand();
                break;
                case "Move":
                Basic.MoveCommand();
                break;
                case "check status":
                Basic.CheckStatus();
                break;
                case "hallway":
                Basic.MoveCommand();
                break;
                case "dance room":
                Basic.MoveCommand();
                break;
                case "bathroom":
                Basic.MoveCommand();
                break;
                case "punch bowl":
                Basic.MoveCommand();
                break;
                case "talk":
                Basic.TalkCommand();
                break;
                case "the scrawny boy":
                Basic.TalkCommand();
                break;
                case "the tall boy":
                Basic.TalkCommand();
                break;
                case "the girl":
                Basic.TalkCommand();
                break;
                case "take":
                Basic.TakeCommand();
                break;
                case "cup of punch":
                Basic.TakeCommand();
                break;
                case "the blond boy":
                Basic.TalkCommand();
                break;
            }
        }
        public string GetTalkInput()
        {
            var Test = true;
            while (Test)
            {
                response = Console.ReadLine().ToLower();
                if (TalkingResponse.Contains(response))
                {
                    Test = false;
                    ProcessTalkInput(response);
                }
                else
                {
                    Console.WriteLine("I'm sorry, I do not understand.");
                }
            }
            return response;
        }
        public void ProcessTalkInput(string response)
        {
            switch (response)
            {
                case "uh...hi.":
                Basic.TalkCommand();
                break;
                case "of course not.":
                Basic.TalkCommand();
                break;
                case "yes":
                Basic.TalkCommand();
                break;
                case "no":
                Basic.TalkCommand();
                break;
            }
        }

    }
}

Where is the exception happening? Why is it happening? I don't know much about the stack overflow exception. The call stack in Visual Studio only says "external code".

What I have tried:

I've tried cutting back on how many times I call the methods in the other responses.