Once the three fell through the trap door, they began to walk through a series of tunnels. The Doctor found a lit torch made from a Dalek eyestalk and used it to light their way.
"Where are we?" Clara asked as the Professor helped her down a flight of stairs.
"Catacombs," the Doctor stated.
"I hate catacombs."
"Don't worry. I'm here," the Professor said, wrapping an arm around Clara.
Clara smiled up at him, then asked the Doctor, "So how come I met your dead wife?"
"Oh, well. You know how it is when you lose someone close to you," the Doctor said. "I sort of made a backup."
River appeared behind Clara. "I died saving him. In return, he saved me to a database in the biggest library in the universe. He left me like a book on a shelf. Didn't even say goodbye. He doesn't like endings."
But the Whispermen had found themselves into the catacombs too. One emerged through the spirit of River, to which the Professor pulled Clara out of the way.
"Dad! We have company," he said.
The Doctor turned around. "Run!" He told them and led the two through the rest of the catacombs.
The Doctor led the Professor and Clara into one of the future TARDIS hallways connected to the catacombs. "Okay. Come on. Quickly," he said.
"Ah!" Clara exclaimed as a Whisperman got her hand.
The Professor tried to pull her free from the snarling Whispermen. "Clara. Focus on our love," he said.
Clara did and managed to escape the clutches of the Whispermen. The Doctor shut the metal door behind them. But a hand of a Whisperman still stayed on their side til it too slid through the door, making it close properly. "Yowzah," he said, dropping the torch onto the floor.
The three made their way again and began to climb up some metal staircases. "There's still a bit of a climb," the Doctor said. "I think I remember the way."
Clara had stopped suddenly and leaned against the Professor for support. "What's wrong?" The Professor asked.
"I just … feel lightheaded. And dizzy," Clara said.
The Doctor turned around. "The dimensioning forces this deep in the TARDIS can make one feel giddy.
"I know, I know," Clara said, then stopped herself and pulled away. "How do I know? How do I
know that?"
"Clara. I'll explain everything to you once this is over," the Professor said, reaching for her hand.
"Have we … Have we done this before?" Clara asked, taking the Professor's hand. But also, she started to remember what she had done earlier when a trio of money-hungry brothers had wrecked the TARDIS. "We have. We have done this before. We were climbing through a wrecked TARDIS. But, Doctor, you said things. Things I'm not supposed to remember."
"We can't do this now," the Doctor said. "The TARDIS is a ruin. The telepathic circuits are awakening memories you shouldn't even have."
But Clara wasn't listening. She had remembered a conversation with the Doctor. "You scared me," she said to the Doctor as she curled into the Professor. "You said I died. I could die?"
"That is not a conversation you should even remember," the Doctor said.
"What do you mean I died?" Clara asked back, but the Whispermen interrupted their train of thoughts.
"The girl who died he tries to save," they said. "She'll die again inside the grave."
"Run," the Doctor told the Professor and Clara, which they did.
