Antonia Hayley, a daring diver, recounts her terrifying near-death experience with decompression sickness while diving near Sable Island. She shares gripping tales of a salvage operation linked to the mysterious Simon Fairchild and his great-grandfather's lost yacht. As the divers face eerie silence and the shadow of something unknown, they grapple with the dangers lurking in the deep. Antonia's narrative entwines thrill with fear, painting a vivid picture of the ocean's hidden secrets and the precarious balance between adventure and survival.