 Three episodes were screened before their initial air dates : " Pilot " at San Diego Comic @-@ Con International on July 19 , 2013 , " Eye Spy " at New York Comic Con on October 12 , 2013 , and " End of the Beginning " at Marvel 's PaleyFest panel for the series on March 23 , 2014 . Beginning with " T.A.H.I.T.I. " , all episodes leading up to The Winter Soldier crossover were marketed as Agents of S.H.I.E.L.D. : Uprising . On March 18 , 2014 , ABC aired a one @-@ hour television special titled Marvel Studios : Assembling a Universe in the place of an Agents of S.H.I.E.L.D. episode . The special included promotional footage for then unaired episodes of the season . 
