Francesca Simon is universally known for the staggeringly popular Horrid Henry series. These books and CDs have sold over 20 million copies in the UK alone and are published in 27 countries.
Her books for older readers, The Sleeping Army and The Lost Gods, depict a world in which the Norse gods are still very much active.
The Monstrous Child is her first novel for teens.
Simon is constantly in demand at bookshops, schools and book festivals, as a judge for literary prizes, and as a trustee of World Book Day.
She lives in North London with her family.