Oh, dear, I think I'd better start again.
2 seconds sound clip from the Dead of Night (1945) movie soundboard.
You can hear this line at 00:17:51.454 in the Blu-ray version of the movie.
Quote context
[...]
- Yes, she's the sixth person.
- Sixth person? Are you playing some sort of a game?
- Well, not exactly a game, my dear.
- Mr. Craig has been dreaming about you for years.
- Not only you darling, all of us.
- Come upstairs and take your things off.
- Oh, dear, I think I'd better start again.
- You see, Mr. Craig has been having the most frightful dreams...
- Penniless brunette laid on according to plan.
- How's that for evidence, Doctor?
- Naturally, you'll say it's a pure coincidence.
- Oh, you can't say that, Doctor.
- The odds are a million to one against.
- You seriously think we cooked the whole thing up between us?
[...]

 Dead of Night (1945)
 Dead of Night (1945)  Phantom of the Opera (1943)
 Phantom of the Opera (1943)  Scooby-Doo, Where Are You! (1969)
 Scooby-Doo, Where Are You! (1969)  Halloween III: Season of the Witch (1982)
 Halloween III: Season of the Witch (1982)  Knight Rider (1982)
 Knight Rider (1982)