Returning winners always have the biggest targets on their backs at the start of Survivor returning-player seasons. Of the three winners on Survivor 50 — Dee Valladares (Season 45), Kyle Fraser (Season 48), and Savannah Louie (Season 49) — Savannah’s target was the biggest because she was a complete unknown. She and Rizo Velovic finished filming Survivor 49 just nine days before they returned to Fiji for Survivor 50, meaning their season hadn’t even aired by the time filming began. Savannah came clean about her win in Survivor 50 Episode 1, but she kept her record of four individual immunity wins a secret. Her other big secret was the fact that she won a Block-a-Vote advantage in…