Question

Bring out the irony in the statement . I didn't specalize in ghost stories but more or less they seemed to specalize in me .

Answer 1

John Hallock was quite cocky of his ability to write ghost stories. But actually it was the ghost Helen from "The Writer's Inspiration Bureau' who used to help him with it.

The above is the main crux of the answer. Now you can elaborate it using excerpts from the chapter based on the marks which the question fetches.

Answer 2

The narrator was a writer who used to work for Jenkins, a publisher. He wanted the narrator to write ghost stories because they were in more demand. The narrator did not want to write ghost stories out of his choice. He wanted to write stories of other genres, but his ghost stories were popular. It was the ghost of Helen, who helped him to write ghost stories.