Binoculars

Binoculars is one of the item required to see the Woman in the Window, the other being the Violin and sheet music.

Role in Ghost Story Island
When the Magistrate takes the camper away, he leaves the binoculars. Take and use those binoculars. After you played the woman's favorite song on the violin. Use the binoculars and you will see her from the window. She will summon you to come up to her, your poptropican says "She wants me to come to her, do I dare?". And then you enter the dark, ghostly house.