Gilbert's cameo is also tied to Little House on the Prairie, as When Calls the Heart's executive producer is Michael Landon Jr., son of late Michael Landon, who played Pa on the iconic family show.
Two worlds are about to collide in the upcoming season of 'When Calls the Heart.' You know what, I'll give you a five-word hint: 'Little House on the Prairie.'You heard me, 'Little House on the Prairi ...