New Delhi, Aug. 12 -- In Starz's "Outlander," Caitriona Balfe's Claire Fraser is bold and brave. She can also think on her feet in high-pressure moments. Her husband Jamie Fraser, played by Sam Heughan, is protective and empathetic. In a new prequel series out Friday, called "Outlander: Blood of My Blood," we see how they each got that way.

"Blood of My Blood" tells the love story of Jamie's parents, Ellen and Brian, and Claire's parents, Julia and Henry. The characters are inspired by the stories of Diana Gabaldon but there are no novels for showrunner Matthew B. Roberts to follow. He also is the showrunner of the original series, which debuts its final season early next year.

With no source material "there's a lot more room to play in...