This short story tells the tale of nine-year-old Ruby, who drives her big brother Oliver crazy, because he has to watch out for her all the time. One afternoon, Ruby is not waiting for Oliver to bring her home from school. The only other person around seems to be that strange trouble-maker from Oliver's class, Lukey. Is it possible that he's done something to harm Ruby?
Mountains and Molehills is in a collection entitled The Time Seeker, part of the core reading syllabus in the English Language Programme for the Revised Irish Primary School Curriculum (eleven and twelve year olds).