Published by Oyez Books. Middle-grade book suitable for ages 9-13.
In ‘The Door Under the Stairs’ series Joe, Hanna and Emil discover a mysterious door under the stairs at their school which takes them back in time where they meet various Malaysian heroes and help them solve mysteries related to the history of Malaysia. There are eight books in this middle grade series.

In this sixth adventure, the three friends travelled back in time to Melaka just before the great
kingdom fell to the Portuguese. Contrary to what they learned in their history books, they
found that the ruler of Melaka was Queen Fatimah. The friends must use all their knowledge
and cunning to make sure that history is not altered.