We parked in the same closet we'd landed earlier, not too long after we left to save the other Doctors. The Doctor—the one I'd arrived with—made sure the time on Sam's watch and the time we'd landed were the same—12:37 am.
I opened the door, and as I walked Sam out, the Doctor said, "They've already started filling the lifeboats. Women and children."
We stepped out into the hallway. There was a long silence, then Sam asked, "…Am I going to die?" His voice had a hint of a tremor.
"The ship will sink," I replied quietly. "There aren't enough life boats for everyone." I never felt like the Titanic sinking was a real thing before that night. I was on the Titanic. I'd felt it hit the iceberg. I was friends with someone who was going to die on the ship. And it felt more real to me than anything. I wanted to just walk away and pretend I'd never seen any of it, but I couldn't. And suddenly I knew what Donna felt when she knew she was in Pompeii. But we couldn't save Sam. He was among those dead. He wouldn't be able to adapt to the future. And I felt awful.
Sam put on a brave face. "You and your doctor should leave while you still can."
I laughed a little. "He's not my doctor. He's the Doctor. His only happiness is in helping where he can." I shook my head before he could speak. "He can't help here. It's something that must happen, that will always happen, no matter how anyone tampers with it."
Sam nodded, though he probably didn't understand a bit of it. "Just the same, you two ought to leave."
I nodded and paused, trying to think of a way we could save him. I didn't want to leave Sam behind, but there was no way he could adjust to my time period.
Sam gave me a sad look before leaning down, his face nearly touching mine as his soft brown eyes studied my blue ones. "Goodbye, Liza," he murmured. Then he kissed me.
I heard the Doctor clear his throat behind me and Sam pulled away. He watched us go into the TARDIS.