Farewell My Beloved Witch

A boat collision ruins Lupin and Fujiko's quiet boating expedition. They discover a woman named Linda in the other boat just as gunmen on a larger boat attack them. After avoiding the gunboat, they learn she is the assistant to a world-renowned expert in nuclear fission. She lived on an island with the doctor. Unfortunately, the island also housed the "Kirein Killers" ("Killers of the Sea").