Brooke Shields is returning to When Calls the Heart on the Hallmark Channel! She will apparently return for three episodes in the upcoming 13th season of the show to play Jack’s mother, Charlotte Thornton. Keep reading to find out more…“We’re thrilled to welcome back Brooke Shields to the ‘When Calls the Heart’ family,” Michelle Vicary, head of programming, Hallmark Media, told Variety. Erin Krakow, Kevin McGarry, Jack Wagner, Chris McNally, Pascale Hutton and Kavan Smith also star in the series. So far, we don’t know when season 13 will be released but it has been routinely airing in January the past few years.