}Marshall Armstrong Is New To Our School{ author and illustrator David Mackintosh returns with this funny and compassionate picture book, telling the story of a bug taking refuge on a little girl\'s arm and the girl\'s attitude to the bug shifting from annoyance to affection.. }Marshall Armstrong Is New To Our School{ author and illustrator David Mackintosh returns with this funny and compassionate picture book, telling the story of a bug taking refuge on a little girl\'s arm and the girl\'s attitude to the bug shifting from annoyance to affection.