Air date: 2013-09-01

In the first series, Cappie and his friends discover a conspiracy when museums are robbed of their most precious paintings.

Air date: 2014-11-09

In the second series, a descendant of Eduard Schimmelpenninck wants to take revenge on the king for what he did to his family 200 years ago.

Air date: 2016-02-21

In the third series, Tom smells a strange scent at the tree house and discovers there is an intruder there. There is somebody hiding in the tree house who is very afraid.