I want to know what to do when a list and the clause that introduces it are reversed. For example:
The wrinkles around his eyes, the deep lines that marked his brow, the gray streak at his temples[?] everything he saw in his reflection told the story of a long life he didn't remember living.
My first inclination was to use an em dash, but I couldn't find any specific rules concerning this particular usage. Since the list isn't an independent clause, I'm fairly certain it wouldn't be a colon; still, I can't shake the nagging feeling that there's a better way to punctuate it.
I'd be grateful for any help you can give me!