Incorrect? “I only have one distinct memory from the movie, a scene where …”

Question

Should I say “I only have one distinct memory from the movie, that of a scene where …”, or would it work without the that of? If it wouldn’t work without the that of, what if I replace the comma with a colon? Would it be ok then?

Answer 1

It would work with or without the that of.

If the bit after the comma was an independent clause (it could be a sentence on its own), then a colon could be used.

You can also jump straight into the description with, e.g.:

I only have one distinct memory from the movie, Maggie Gyllenhaal turning to look over her shoulder with a perfect expression of shocked outrage stifled by uncertainty.

I only have one distinct memory from the movie: Maggie Gyllenhaal turns to look over her shoulder with a perfect expression of shocked outrage stifled by uncertainty.

Answer 2

You might want to replace "I only have one" with "My only..."

My only distinct memory from the movie is Bingley's proposal to Elizabeth.

Otherwise, a colon is a good option:

I only have one distinct memory from the movie: a scene where...