Mahendra Calls ghosts or spirits a figment of the imagination. What happens to him on a full-moon night?

Mahendra was a very practical man. He often chided Ishwaran not to believe in ghost or spirits because they were not real but a figment of the imagination.
On one full moon night, Mahendra woke up from his sleep by a low moan close to his window. At first, he thought that it was a cat prowling around for mice. But the sound was too deep and guttural for a cat. He looked through the window and saw a dark cloudy form clutching a bundle. He broke into a cold sweat and fell back on the pillow. When he recovered from his ghastly experience, he concluded that it must have been some trick that his subconscious mind had played on him.