All of a sudden - after 37 years) is an Indian supernatural and Psychological thriller television serial which was telecasted on Sony TV.

The centerpiece of this serial was the little known small town of Gahota, which experienced paranormal activities after each cycle of 37 years.

Preparing for the devil's birth, Ajay removes anyone who comes in the way by murdering the person.

Ajay encourages the young Rahul to recall his powers and true purpose since Rahul has grown up as a normal, kind human being oblivious of his powers.

Rahul finally transforms into Ajinkya, who promptly kills Ajay as he is no longer needed.