In 'Hello, Who's Calling?', you are a reclusive detective specializing in cold cases, using a retro landline phone that connects to a mysterious network. Each call you receive holds the key to unraveling secrets long buried. With every dialogue choice, you determine the fate of the characters involved in these dark tales while navigating through the shadows of your own past. As you delve deeper into each conversation, the lines between the living and the dead blur, leading to unexpected twists that challenge your perception of reality. Will you solve the intricacies of their stories or get lost in the chaos?