Abigail and Samantha are globe-trekking British teenagers in the 1930s, investigating paranormal mysteries and confronting dangerous creatures with their explorer-feminist Aunt Gillian, a pet fox named Hastings, and other intriguing companions. Girl power, monsters, zeppelins, and much more... I bet you've never read anything quite like this retro pulp series!
http://www.amazon.com/Temple-Golden-Shakespeare-Sisters-Adventure-ebook/dp/B00SHKURRG/
Suitable for young adults, certified extraterrestrials, and all forms of artificial intelligence!