Aggie Morton, Mystery Queen: Peril at Owl Park

Toronto-born MARTHE JOCELYN is the award-winning author and illustrator of nearly fifty books for children of all ages. Her picture book Sam Sorts was honored by the United States Board on Books for Youth as an Outstanding International Book, and another picture book, Hannah's Collections, was shortlisted for the Governor General's Literary Award for Illustration. Her novel Mable Riley won the inaugural TD Canadian Children's Literature Award. Marthe is also the 2009 recipient of the prestigious Vicky Metcalf Award for her body of work.

ISABELLE FOLLATH is a freelance illustrator based in Switzerland who has created art for advertising agencies, magazines and publishers for over 15 years. Her clients include Lufthansa, La Perla and children's publishers across Europe. She has illustrated Jeanne Willis's book of nursery rhymes, What Are Little Girls Made Of, as well as the picture books Joy by Corrinne Averiss and The Incredible Hotel by Kate Davies, and the middle-grade novel series Aggie Morton, Mystery Queen by Marthe Jocelyn, Sally Nicholls' In Time series and Jack Meggitt-Phillips The Beast and Bethany series.