Perry, Chrissie. 2007. The Secret Club.
The Secret Club is the first in the Go Girl! series. It was originally published in Australia. It is a fun, light chapter books for young readers--I would imagine all girl readers. The print is on the large side; there are some black and white illustrations. It's a chapter book that is fun and enjoyable for that age group. If I had to guess--and keeping in mind that it's after 1 AM--I'd guess 7 to 9 year olds. It's a little younger than the original Babysitters Club books I grew up reading. Anyway, I liked the book.
It was 92 pages long.