S1, E2: Wolfe and Amanda cannot prevent Navajo code talker Walter (James Kidnie) from being killed by Immortal Mario Cardoza (Carlo Rota). Amanda helped Cardoza in 1952 and Walter found evidence of them being still alive. Wolfe works this out. Amanda admits her immortality to him. Cardoza kills himself by paying a hitman in order to disappear. The plan works, but Amanda finally beheads Cardoza.