"About once every two months," Ray says. "I almost never actually try to go through. I tend to bounce off the entryway if the other me's in there."

"For some reason," Egon interjects, "Dr. Stantz here doesn't appear to be able to duplicate his presence in any given continuum."

"Fortunately, it's been six weeks since the last time it appeared, so I'm about due to have a good chance at it."