Mark Phillips Mark Phillips was the pen named used b Randall Garrett and Laurence Janifer for the three novels, Brain Twister, The Impossibles, and Supermind. The pair was nominated for a Hugo for best novel for Brain Twister in 1960. They also collaborated on the novel Pagan Passions. Randall Garrett Gordon Randall Garrett (December 16, 1927-December 31, 1987) was a prolific author of science fiction and fantasy. He was a regular contributor to Astounding and other magazines during the 50's and 60's. He is best known for his alternate reality stories featuring the detective Lord Darcy who lives in a world where the Plantagenates still rule an Anglo-French empire and magic works. He wrote under a number of pseudonyms including David Gordon, John Gordon, Ivar Jorgensen, Darrel T. Langart, Gerald Vance and others. He collaborated on several works with Laurence Janifer and with Robert Silverberg as Robert Randall. He was a founding member of the Society for Creative Anachronism. Laurence M. Janifer Laurence M. Janifer (March 17, 1933-July 10, 2002) was born in Brooklyn, New York. Originally named Laurence M. Harris, he changed his name to Janifer, which was the name of his Polish grandfather. Starting with the publication of a story in 1959 his writing career spanned three decades. Many of his early stories were published under the name Larry M. Harris. He collaborated on a number of stories and novels with Randall Garrett, often using the pseudonym Mark Phillips. In addition to his career as a writer, he served as an editor for various magazines and literary agencies.