Kathleen Long Bostrom is a full-time writer who previously served as an ordained minister in the Presbyterian Church USA. She has published more than fifty books that have sold over two million copies and are printed in thirty languages, including Russian, Indonesian, and Afrikaans. She is a prior president of the Presbyterian Writers Guild and holds membership in the Author's Guild, PEN, and the Society of Children's Book Writers and Illustrators.

In 2013, Kathleen was named the Distinguished Alumna from her alma mater, Princeton Theological Seminary, due to the widespread reach of her books for children. She was awarded the David Steele Distinguished Writer Award in 2014, the most prestigious writer's award given by the Presbyterian Church (USA). Kathleen taught a class on writing for children at the 2016 Buechner Writer's Workshop held at Princeton in June 2016 and is a sought-after speaker and workshop leader around the country.

Her husband Greg is also an ordained pastor and they live in Carlsbad, California, two miles from the ocean and near their three grown children who are all in the film business in Los Angeles.