Molly is on her way out of the darkened lab, a stack of books in her arms. It's been a long day, but her responsibilities aren't over yet. (Need to feed Toby, then get that draft of the article on prescription drug-induced cardiac arrest to the editor, then e-mail Tim about tickets to his play…)
A voice jolts her out of her thoughts. "You're wrong, you know."
Molly gasps, turns around, and finds Sherlock Holmes sitting in the darkness.
"You do count. You've always counted, and I've always trusted you. But you were right. I'm not okay."
"Tell me what's wrong."
"Molly, I think I'm going to die."
"What do you need?"
"If I wasn't everything that you think I am – everything that I think I am – would you still want to help me?"
"What do you need?"
"You."
The detective tells the pathologist why he needs to die, how he intends to do it, and her role in his scheme. Sherlock's plan is airtight, but she expected nothing less. However, if anyone is a match for Sherlock in cunning, it's Jim Moriarty.
Molly's greatest fear is that Sherlock's plan won't work.
A/N: Thank you to Ariane DeVere for posting transcripts on her LiveJournal! Dialogue here is from "The Reichenbach Fall."