
D. H. Timpko is the author of the Firma Twins adventures, science fiction novels for middle grade children (ages 8-12). Book 1, The Firma Twins and the Purple Staff of Death—identical twins learn they have fantastical powers far beyond anything they could have imagined. Book 2, The Firma Twins and the Flute of Enchantment, takes place at a science fiction convention and was shortlisted for the 2021 Gertrude Warner Book Awards for Middle Grade Fiction.
Timpko has just finished the first two books in the Mariah Rhodes series (Book 1: Escaping to Space and Book 2: Surviving the Danger Planet)—science fiction novels for middle grade kids about an abused teenage girl in the future whose uncontrolled telekinesis leaves her stranded in a lost colony on an unstable planet. She is now writing Book 3 in the series: Joining Space Fleet.
Under the pseudonym Alexis Dupree, she wrote Managing Major Chronic Diseases: Advice from a Patient and Knee Replacement Advice, Checklists, and Journal.







