When Calls The Heart Goes Back to School in Season 13, Episode 3. Back with a new episode at 8/7c, When Calls the Heart (WTCH) Ep. 3 of Season 13 sees Elizabeth welcome new faces into her classroom while Nathan and Bill launch an investigation into the wildfire.  Last week, on When Calls The Heart, we saw … Continue reading When Calls The Heart Goes Back to School in Season 13, Episode 3