One thing that I discovered when I started looking at old newspapers is that they used to include serialized stories, with a new episode every day or every week.
Here’s (part of) an example, from the March 20 1939 Globe and Mail:
I love that this serial features the eccentric Luella Coatesnash.
Dorothy Cameron Disney (1903-1992), later known as Dorothy Disney MacKaye, started off as a mystery writer and then became a marriage advice columnist, writing “Can This Marriage Be Saved?” for the Ladies’ Home Journal. Death In The Back Seat was published in novel form in 1936.