ɐkˈoːɹdɪŋ tʊ ˈɔːθɚɹ ˈælvɪn ˈeɪtʃ. mˈæɹɪl, ðə tʃˈɔɪs tə kˈæst dˈɑːnəld mˈeɪ ɪnðə lˈiːd ɹˈoʊl ˈæftɚ pɹˈɛstənz dᵻpˈɑːɹtʃɚ wʌz nˌɑːt ɛksplˈeɪnd ɪnðə stˈoːɹilˌaɪn.
According to author Alvin H. Marill, the choice to cast Donald May in the lead role after Preston's departure was not explained in the storyline.