From Russia to Iran: Crossing Wild Frontier (2017)

S4E6 The Creeper of Walnut Grove

In Walnut Grove, a series of thefts has everyone on edge. Laura and Andy take it upon themselves to uncover the culprit behind the crimes. Their investigation leads them to ruffle quite a few feathers, including that of Mr. Ingalls, who becomes particularly upset when his hair ends up turning green.