Only ET celebrated 'When Calls the Heart's 100th episode with Erin Krakow, Pascale Hutton, Kevin McGarry, Viv Leacock and more Hope Valley citizens! The cast and crew gathered on set last year to commemorate the milestone, where the person who started it all, author Janette Oke, praised Krakow's performance as Elizabeth across 10 seasons. As for cocreator Brian Bird, he's ready for 'WCTH's episode count to go headtohead with 'The Simpsons' when all is said and done! ‘When Calls the Heart’ season 10 premieres July 30 at 9 p.m. ET/PT on Hallmark Channel.