Expert in storytelling. Storyteller. Writer or writer specialized in storytelling or writing. Storyteller . A person whose activity is to keep accounts, accountant. By extension: liar, liar.
1st_ Writer, writer who prefers the short story style in his work. 2º_ Taking 'tale' in its sense of "lie, false story", a storyteller is a "liar, exaggerated". And if it's for 'telling something', I'd be a 'gossiper'.