Question: Who's the husband of the writer of The Unknown?
Related documents: [0]  [DOC] The Unknown is the 14th book in the Animorphs series, written by K.A. Applegate. It is narrated by Cassie. The front cover quote is, "Never underestimate the power of a morph...". All books after "The Unknown" were dedicated to Applegate's son, Jake, as well as her husband and co-writer, Michael. [END] 
[1]  [DOC] Animorphs is a science fantasy series of young adult books written by Katherine Applegate and her husband Michael Grant, writing together under the name K. A. Applegate, and published by Scholastic. It is told in first person, with all six main characters taking turns narrating the books through their own perspectives. Horror, war, dehumanization, sanity, morality, innocence, leadership, freedom and growing up are the core themes of the series. [END] 
Answer: 
Michael Grant
Michael Grant