The Mystery of the Banshee Towers (Five Find-Outers #15)

Banshee Towers on Banshee Hill is reported to have a Wailing Banshee, which the Find-Outers are rather curious about. So, with Ern, Mr Goon's nephew, the Find-Outers, go and look around Banshee Towers, which Fatty thinks looks more like a fortress. Once inside the Towers, the Find-Outers are curious at the artists who are copying the paintings on the walls. "We all belong to the School of Art", one of them explained. Then Ern, who is interested in the pictures of the sea, makes a discovery, and this 'curious clue' leads the Find-Outers in yet another mystery they have to solve.