"Extra" has an exclusive look at the upcoming episode of "Deadliest Catch."

In the sneak peek, Captain Scott Campbell Junior continues his battle with his debilitating back pain as it flares up during a fishing excursion.

'Deadliest Catch' Sneak Peek! Junior Hits a Wall with His Debilitating Back Pain

"Deadliest Catch" airs Tuesdays at 9 PM on Discovery.