About Oksana Kemarskaya Thomas Kingsley Troupe is a Capstone Press author. Books by Oksana Kemarskaya The Secret Lives of Plants! by (author) Janet Slingerland illustrated by Oksana Kemarskaya consultant editor Ken Cameron Ages 8 to 14 Grades 3 to 9 The Legend of the Vampire illustrated by Oksana Kemarskaya consultant editor Terry Flaherty by (author) Thomas Kingsley Troupe Ages 7 to 9 Grades 2 to 4