4 stars
A quick and entertaining read. This one is fast-paced and sprinkled with facts about ninja and samurai. An interesting book in which Annie and Jack discover that Morgan is missing, which begins their adventure to help her by finding four mystery objects.
While there was not a great deal of plot in this one, it was interesting to read about how the children overcome various obstacles and learn the way of the ninja. It nicely sets up their journey to find all four items and locate Morgan.
As always, the illustrations pair nicely with the text and the short chapters make it a very approachable book. Another good read in the series.