1x21 - Ghost Hunt

Naru reveals Madoka's true motive behind requesting they take on the case was to expose the fake Oliver Davis. Naru informs the team their job is therefore finished, despite Mai's protests. While the group prepares to leave, Masako disappears, and Mai has a dream that allows her to lead the team straight to the missing girl. A malevolent spirit attacks the girls, but Lin is able to ward it off and the team escapes unharmed. With no other way of removing the spirits, the house is later purified by fire.