Definitely the darkest episode of South Park since "The Damned" but cartman's manipulation of Heidi is insanely good. It's Cartman at his best, but with a girlfriend this time. Seeing kyle trying to split them up after seeing all of the abuse Heidi puts up with is completely understandable but kyle always makes things worse. Meanwhile the subplot with president garrison is absolutely hilarious. Overall 7.3/10
Review of Doubling Down
