'Jeopardy!' host Alex Trebek undergoing chemotherapy again after setback in cancer battle

"Jeopardy!" host Alex Trebek revealed that he is undergoing another round of chemotherapy after a setback in his battle with pancreatic cancer. He revealed the news on an interview with ABC's "Good Morning America." Trebek announced in March that he had been diagnosed with stage 4 pancreatic cancer. "I'm going to fight this, and I'm going to keep working," Trebek said in a video message to his fans. "Keep the faith and we'll win. We'll get it done. "Just months later in August, Trebek announced