Martin Mystery (2003)

S1E14 Haunting of the Blackwater

Title: The Blackwater Specter Plot: The spirit of a past lodge proprietor starts to manifest in his own establishment, causing chaos. When Diana becomes possessed by this vengeful ghost, Martin and Java are compelled to uncover a method to exorcise the entity. They must navigate the eerie mysteries of the lodge to free Diana and put the restless spirit to rest once and for all.