[At the beginning of the letter, Stefan would naturally not know that Lisa""s voice should accompany the reading of the letter, because he does not know who sent the letter! Further, some of the events in the film are not witnessed by Lisa, as the film frequently mismatches her presence in the narration with various scenes/incidents in the flashbacks...I""m gunning just the same way for your Major Callaghan.[Notice that in the film, two other characters"" names are often mis-identified besides Calloway who is called "Callaghan.It was based on left-leaning Howard Fast""s 1951 fictionalized novel about a slave revolt in Rome between 73-71 BC led by a gladiator.The scene ended in a frozen factory chimney and industrial basement, where the pursuing Robin was frozen (with only 11 minutes to thaw him before he died), while Freeze escaped in his vehicle - with the diamond.