The stars of “Outlander: Blood of My Blood” celebrated the highly anticipated Starz series’ premiere at the Directors Guild of America in Los Angeles on Monday night. “Blood of My Blood” is a prequel to the long-running historical fantasy romance show “Outlander,” which centers on the love story between former military nurse Claire (Caitriona Balfe) and Highland warrior Jamie Fraser (Sam Heughan). The new show focuses on the romances of each of their parents.