In this original science fiction story, Captain D. Emerald, and her sister Assistant W. Ruby, are on a research mission in deep space, when they come across their old nemesis, the Croncrods. Audio Preview Your browser does not support the audio element. https://utility.librarycall.com/files/alienalerteditpreview.mp3 Submitted By LibraryCall Audio Type story Story Language English Audience Pre-School (3-5) School-Age (6-10) Tweens and Teens (11-17) Duration 16:42 Author Ryan Aoto, Elizabeth Aoto Reader Ryan Aoto Tags science fiction Space aliens adventure conflict siblings