Jacob finds Cassidy as she’s running from the horde of angry ghosts. He helps her fight off an attacking spirit who wears a hat just like the one Richard has on in the photos of him and Thomas. Cassidy takes the ghost’s hat and coat before sending him on, with a new plan to have Jacob impersonate Richard. She hides atop a wall of bones while Jacob, in the guise of Richard, calls out to Thomas. When the poltergeist shows up, Jacob leads him along a path where Cassidy has left a trail of photographs on the ground. Thomas picks them up and looks at them. As each photo sparks recognition and memory, the red glow surrounding him dims. At the tunnel’s dead end, Thomas says Richard’s name and reaches for the hand Jacob offers. However, Cassidy, who has been crawling along the top of the wall to keep them in sight, accidentally makes a loud noise that snaps Thomas out of his memories. Cassidy falls off the wall and into a stack of rotting bones. They give way beneath her, and she falls into darkness.

While Cassidy is stuck in a pit of bones, Jacob fights to hold Thomas back so that he can’t attack her. Cassidy finds that she can’t climb out of the pit, so she slams her shoulder into the side of it, causing the bones around her to topple. She makes her way to Jacob and Thomas, but she isn’t sure what to do next; she’s tried everything, and Thomas still hasn’t recognized what he is. Jacob has an idea, though. He says, “C’est finit”—meaning “It’s over”— which was the last thing Richard called out in the Catacombs when he couldn’t find Thomas. Thomas repeats the words, and then his red light dims and finally goes out. Cassidy uses her mirror pendant and incantation to send him on. Then, she and Jacob exit the Veil, find her parents—who only lightly scold her for falling behind—and leave the Catacombs.

Back at the hotel, Cassidy’s parents review the new Catacombs footage and say that it turned out even better than before. Jacob seems bothered by something, but Cassidy doesn’t want to pry and knows that he’ll tell her when he’s ready. She texts Lara to assure her that she’s okay and that the mission was successful. In the middle of the night, Cassidy thinks she sees Jacob sitting in her room and looking out the window, but later, she isn’t sure if it was real or a dream. 

The next morning, Cassidy goes to Adele’s home to tell her new friend that their plan worked and that Thomas is no longer trapped as a restless spirit. Adele thanks her. When Cassidy says goodbye, Adele responds, instead, with “À bientôt,” meaning “See you soon” (138).

Before they leave Paris, Cassidy’s parents take her to see the Louvre. She feels the Veil pulling at her when they view an ancient Egyptian sarcophagus with nail marks on the inside. Mrs. Blake says that the marks mean someone was buried alive in it, and Cassidy opts not to answer the Veil’s calling. 

Jacob tells Cassidy that he’s ready to reveal how he died so that if he ever starts to become like Thomas, she can help him remember the truth. His full name was Jacob Ellis Hale, and he died two and a half years ago at the age of 12. He had two brothers: Matthew, who was 16 years old, and Kit, who was seven. Kit lost his favorite toy in the river, so Jacob went in to look for it. Something hit him on the head while he was at the bottom of the river, and he drowned. At first, Jacob couldn’t leave the river; it was his Veil. That changed when he saved Cassidy from drowning. When he finishes the story, Cassidy vows to herself that she won’t ever let him forget who he is or what he means to her.

The Blakes return to the hotel a final time before heading to the airport. There, Pauline delivers the photos that her uncle developed for Cassidy. She passes along her uncle’s observation that Cassidy has a special eye for photography. The images show hints of things hidden behind the curtain of the Veil: Gray shades indicate the presence of ghosts, and the palace is traced with white from the searing fire. In a photo of Jacob, the air where he’s sitting “bends like candle smoke” (192).

While waiting at the Metro station, Cassidy sees a figure in the crowd that other people don’t seem to see. The figure has a skull mask for a face and only blackness behind it. He pulls his mask away, and Cassidy loses consciousness. When she comes to, her father says she fainted. The shadowy figure with the skull mask is gone. The Blakes board their train. As it pulls away, Cassidy feels excited to see what happens next.