Brace yourself Hope Valley faithfuls: Hallmark is expanding the When Calls the Heart universe with an all-new prequel series. Bethany Joy Lenz, Benjamin Ayres and Jill Hennessy are set to star in Hope Valley: 1874, which begins production next week, Hallmark announced on Friday, December 12. "Hope Valley: 1874 gives us a wonderful opportunity to further explore the universe of When Calls the Heart and build a deeper world around this show for our devoted fans, who have helped make it one of the most successful and enduring series on television today," Hallmark Media head of programming, Michel...