'The Magic Wishing Well' is the second book in 'The Jess Mystery Series' for children aged 7 years and older. Jess and Ruby are best friends in Class Three at 'Oakhill Primary School'. When the girls discover an old well in the school grounds, they think that it's a magic wishing well and they have to test its powers. Joe and the twins, Lucy and Tom, warn the girls that they will get into trouble. Jess and Ruby make several magic wishes and strange things start to happen. When the end of term tests disappear and someone vanishes, they wonder what they have done. After more magic wishes, the school is broken into and the head teacher has to close the school. Will the school open again? Will there be any more magic?