This is one of a series which takes an experiment-based approach to science and is designed to fit directly with the National Curriculum at Key Stage 2.

The texts feature episodes in the life of an eccentric family - the Sparks - with a fascination for science experiments which are skilfully woven into the storyline for children to try at home.

This time, there are mysterious goings-on in the night sky above Duckpool.

Flashing lights, sightings of UFOs, weird noises...when the rumours start to fly about alien visitors, the Spark family decide to step in and investigate.