Even the undead can’t bring down The Dark Knight; that’s the lesson to be learned from this week’s box office results as the Caped Crusader stayed atop the weekend box office like pool floats, drawing $42.6 million to arrive at a new total of $393 million domestically. Add in an additional $202 million in foreign box office and The Dark Knight sits at an impressive $596 million in just 17 days.

Still, the Brenden Fraser vehicle, The Mummy: Tomb of the Dragon Emperor was not exactly blown over by The Dark Knight, earning a respectable $40.4 million for a strong second-place showing. That’s far more than last week’s challenger, X-Files: I Want to Believe, will probably gross at the box office at the end of its run. X-Files fell all the way to the ninth spot this week, drawing only $3.38 million in the crowded field and topping only $17 million in 10 days, far below expectations and marking the film as the biggest disappointment of the summer since Speed Racer.

Step Brothers was third with $16.5 million ($63.1 million to date), Mamma Mia! was fourth with $12.6 million ($87.4 million to date), and Journey to the Center of the Earth’s $6.6 million ($72.9 million to date) edges the Kevin Costner starrer, Swing Vote, for the fifth spot. The improbable political comedy struggled to earn $6.2 million in its debut, earmarking it as yet another bomb at the box office for the once-potent Costner.

Meanwhile, aside from Batman, this summer may have helped Brenden Fraser’s career more than any other; with two movies in the top five this past weekend, grossing a combined $47 million this weekend and a combined $113.3 million domestically to date, he’s proven himself to still be bankable.