Seven weekends deep into its theatrical run, Christopher Nolan’s mythic epic has spent the entire summer defying the usual rules of box office gravity. What started as a genuinely risky bet, a nearly three-hour, R-rated adaptation of ancient Greek poetry, has instead become one of the defining theatrical events of the year, and it’s still finding new ways to surprise industry watchers. That surprise continued into the Labor Day stretch, with ‘The Odyssey’ climbing back to the top of the domestic box office chart, reclaiming the number one position it had briefly ceded in the weeks prior. The film’s ability...