Amazing! This magazine really does include a full-length mystery novel – Cellini Smith Detective, by Robert Reeves! You can read more about the character of Cellini Smith on the Thrilling Detective website!
The PDF version of this magazine appears to repeat pages sometimes (or it could just be that my PDF reader is acting up), but boy am I ever excited to read this!
You can read this magazine online or download a copy for yourself here, on archive.org!