Joe Otterson TV Reporter Toby Kebbell has joined Season 4 of “For All Mankind” at Apple, Variety has learned exclusively. The alternative history series was renewed for its fourth season in July. Production on the new season is currently underway. The series takes place in a world in which the USSR beat the US to the moon, leading to the continuation of the space race. In Season 3, Mars becomes the new frontier for not only NASA and the Soviets, but also private business interests. Kebbell joins the series as Miles, described as “a former offshore oil platform worker who pursues a new job opportunity on Mars.”