Joanne Gellhorn is a character in the video game Lost: Via Domus. Lisa Gellhorn's sister, Joanne was on a student scholarship to Zoran Savo's research institute. She discovered that Savo was involved with illegal activities, such as ESP experiments. When Savo found out that Joanne knew about the experiments, he killed her. Since then, Lisa has been rigorously tracking Savo, intent on putting him behind bars for what he did to her sister. ("Whatever It Takes")