By Pallavi Reddy, CNN

It’s been a busy political week to say the least. Heading into Thursday’s debate, Newt Gingrich’s ex-wife, Marianne gave her first on-camera interview with ABC News. We’ll have chief investigative correspondent Brian Ross on the show to talk about his interview with Marianne Gingrich and the backlash from Newt Gingrich. The Washington Post’s Jennifer Rubin, former media correspondent for the PBS NewsHour Terence Smith, and the New Yorker’s Ryan Lizza join us for a conversation about the South Carolina primary coverage, Mitt Romney disclosing his taxes, and the latest political headlines. We’ll also be joined by the New York Times’ public editor Arthur Brisbane to talk about whether the paper should be a “truth vigilante.”

This Sunday at 11a.m. EST on CNN.