B. M. Bower 
Ghost in the Red Shirt and The Adam Chaser [EPUB ebook] 

Excerpt: "The proper way to begin this story would be to assure the reader, first of all, that I have never believed in ghosts; that is the way ghost-stories usually begin, I think. Also, I should say that what I am about to relate is perfectly true-but I won’t begin it like that. As a matter of fact, I don’t care much whether you believe me or not, and I always did believe in ghosts-at least, I always hoped they were truer than Santa Claus, and that some day I should see one."