"Ozark" season four, episode seven, titled "Sanctified," functions as a pivotal, tragic turning point that cements Wendy Byrde’s ruthlessness and marks the end of the Byrdes' attempts at a clean exit. The episode, which serves as a mid-season finale, features the brutal murders of Wyatt Langmore and Darlene Snell, triggering Ruth Langmore's descent into vengeful madness.