Four PERILOUS Stars. “Backflow” is Book One of a series of Sci-Fi short stories by talented author F. P. Adriani who has also published “Captain's Choice”. This tale is related to the space freighter ‘Demeter” and the crew under the command of Captain Lydia Zarro. The plot is about an unusual occurrence the “Demeter” crew experiences on the planet Genteran. Written from the female point of view of Captain Zarro, this is a very technical “engineering" discourse, as author Adriani relates in his foreword, with respect to the operation of her ship and the construct of that universe. The reader may benefit by glossing over the physics and technical talk to get to the meat of the tension-filled story, a thorny problem, the ingenuity displayed, and the interaction of the crew members. Very Definitely Recommended. Four DETERMINED Stars. Kindle, 69 pages.