Bones kicks off its fifth season on September 17 with an episode titles "Harbingers in the Fountain."

Browse through a slew of season premiere photos, including a couple of guest star Cyndi Lauper, now.

When speaking to Michael Ausiello of Entertainment Weekly, however, creator Hart Hanson was focused on another episode, one that airs later this year: Number 100.

Hanson told the columnist he's considering flashing back to Booth and Brennan’s first ever assignment to mark the occasion.

“We alluded in the pilot that the first time they worked together — the time before the pilot — that it went very badly. They had a terrible time. So it would be really fun to do a flashback episode.”

This is just one of many ideas being tossed around, however, so don't get too excited yet, Bones, fans.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.