Complex sentence: Captain Murphy, after entering the captain's cabin, finds the ghost of the "Antonia Graza's" Captain, who explains that they recovered the gold from a sinking cruiseship, "Lorelei", along with a sole survivor.
Split into simpler sentences: Captain Murphy, after entering the captain's cabin, finds the ghost of the ship's Captain. The ghost explains that they recovered the gold from a sinking cruiseship, "Lorelei", along with a sole survivor.