Zac Efron: 'Paperboy' Pumped

Zac Efron shows off his muscles as he heads to The Paperboy set in New Orleans, Louisiana on Wednesday afternoon (August 10).

The 23-year-old actor plays Matthew McConaughey‘s brother in the upcoming flick, based on the 1995 Pete Dexter novel.

The thriller will follow a Miami Times reporter as he returns to his Florida hometown to investigate the imprisonment of a death row inmate.

Over the weekend, Zac was spotted filming more scenes with Matthew and grabbing lunch with a few pals.