Kathleen O'Malley has collaborated with A.C. Crispin on two of the seven Starbridge books: Silent Dances and Silent Songs also worked on Serpent's Gift. She spent spent most of her career working with animals including: working on an Arabian horse farm, breeding and showing Doberman pinschers and greyhounds, working in professional dog show kennels, and gradually moved into humane work and animal rescue. But the job she credits as having the greatest impact on her life was working with wildlife at the Patuxent Wildlife Research Center. She worked there for more than twenty years with a variety of endangered species including bald eagles, Andean condors, masked bobwhite quail, and four species of cranes. That included the endangered whooping crane and even more endangered Mississippi sandhill crane.

In addition to the works released by Ridan, Kathleen has also written a Star Trek Next Generation book (Possession) and worked with A.C. Crispin on the novelization of Alien Resurrection based on the script by Josh Whedon.  She also has contributed stories in three anthologies: Tales of Zorro, The Ultimate Werewolf, and Werewolves and Shapeshifters: Encounters with the Beast Within.