[RndTbl] at command

Is there a way to tell after the fact what command(s) an "at" command ran? I got an email about an error in a cron job and it appears to be an at command that was queued up. The error is suspicious, and I don't remember queueing this at command (though I do use at from time to time).

I can find in logs that it was atd running it under my user id, but the at queue is now empty and I can't find a way to retroactively see what commands/script tried to run. I'm doing a full fs search on some of the error strings but I am not hopeful.

Is there a way to find out more about what at ran? Are there options that in the future would give me more log/debug output so I can more easily answer this type of question?