18 Game of Thrones Season 7 Theories to Read Until the Show Returns

As Sansa tells Jon Snow during the finale, "Only a fool would trust Littlefinger." And Petyr Baelish already seems poised to ruin Jon and Sansa's happiness at retaking Winterfell, either by convincing Sansa to betray her cousin or by finding his own way to usurp Jon's newfound power — perhaps by making good on his one-time promise to Cersei Lannister that he would take Winterfell for her.