'Friday Night Lights' vet nabs 'Big Love' role
Rankin has been keeping busy, having also booked a role on HBO's Alan Ball project "All Signs of Death" and in the 2011 movie "The Chaperone."
On "Big Love," Rankin will play the son of a "hard line of polygamists." He's also had roles on ABC series "Lost" and "Grey's Anatomy."
Rankin is repped by Abrams Artists Agency and Flutie Entertainment.