 " Prod. no . " is short for " production code number " , which signifies the order that the mobisodes were produced in and appear on DVD and Blu @-@ ray , which is different from the order that they aired in . " Original air date " refers to the original V CAST airdate . Days are in relation to the day of the crash , which is day 1 and September 22 , 2004 . All mobisodes are newly written and shot , with the exception of " The Envelope " , which is a deleted scene from " A Tale of Two Cities " that was shot on August 9 and 11 , 2006 , a year before the other mobisodes . 
