Infiltrate! Secret of the Haunted Castle (潜入!ゆうれい城の秘密, Sennyū! Yūrei shiro no himitsu) is the first episode of the 1992 anime series of Calimero.
In this episode, Director Condor takes Calimero and friends to an old castle, and after hearing it is haunted, they want to investigate and try to find ghosts.
This episode is not currently available in Japanese. However, it can be watched in Italian with English subtitles here: https://vimeo.com/116236073
Other languages are below.
Videos
Calimero et ses amis ( Episode 3 ) -Le château hanté (VF)
French (mistakenly posted as episode 3)
Calimero (seconda serie) - 01 - Il castello incantato
Italian
كاليميرو و فاليريانو الحلقة 1
Arabic