diff --git a/src/string_utils.py b/src/string_utils.py
new file mode 100644
index 0000000..44bb6af
--- /dev/null
+++ b/src/string_utils.py
@@ -0,0 +1,19 @@
+def reverse_string(input_string):
+    """
+    Reverses the given input string.
+    
+    Args:
+        input_string (str): The string to be reversed.
+    
+    Returns:
+        str: The reversed string.
+    
+    Raises:
+        TypeError: If the input is not a string.
+    """
+    # Check if input is a string
+    if not isinstance(input_string, str):
+        raise TypeError("Input must be a string")
+    
+    # Return the reversed string
+    return input_string[::-1]
\ No newline at end of file