- Meet your new nanny, Mrs Watson. 
- What do you mean, dear? 
- I found myself in a sort of nursery.
4 seconds sound clip from the Dead of Night (1945) movie soundboard.
You can hear this line at 00:27:17.430 in the Blu-ray version of the movie.
Quote context
[...]
- I can't find her anywhere. Sally! Sally! Sally?
- There you are! I was wondering where on earth you'd got to.
- I found another door behind a wardrobe, then along a corridor. Then into the room at the end.
- Oh, there? But that's where the whole thing happened. Hey, Sally!
- Meet your new nanny, Mrs Watson.
- I found myself in a sort of nursery.
- I didn't know any of the children were staying the night.
- Why, yes. This little boy said he was sharing a room with his sister.
- He told me his name was... Francis Kent.
- Come off it, Sally! So you knew all the time?
- About Constance Kent murdering her brother, Francis, of course.
- I didn't know. So that little boy was...?
- I'm not frightened I'm not frightened! Oh! Please hold me tight. Oh, hold me tight!
[...]

 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)