Foul Play Chapter 27-29

In which Mr. Hazel endeavours to chart the mysterious island and establish signals to attract distant ships, while Miss Rolleston wrestles with turbulent emotions and an unnerving encounter amidst the wild. In which Hazel's solitary mountain ascent reveals a hidden volcanic crater, and upon his return he discovers Miss Rolleston in a perilous state, necessitating a tender and anxious rescue.