An Oxford Medical School graduate takes a position at a mental institution and soon becomes obsessed with a female mental patient, but he has no idea of a recent and horrifying staffing change.

Lord and Lady Glenarvan found a bottle in the ocean. This bottle contained a letter from Captain Grant that he and two of his sailors had survived a disaster at sea and need help. Unfortunately, the letter was damaged by water, and the latitude is known (37 degrees), but not the longitude. The Glenarvans decide to find Captain Grant.