20 days after its publishing, The Last Passenger was listed on Amazon US's Best Sellers and is the first Spanish author to achieve this.
When they board, they find a very interesting puzzle: a deserted ship, with recently cooked meals in the dining room; a few months-old baby dropped in the ballroom; and something else, something evil that no one can identify.
Kate meets an old man who was on board the Pass of Ballaster the night she found the Valkyrie.
After trying to break into Isaac Feldman's house, Kate tells him what she knows about the ship and he reveals that he was the baby found in Valkyrie's ballroom.
Now being the only person who knows the whole story, Kate is invited by Feldman to join his team on the new voyage of the Valkyrie, to find out what really happened in 1939.