请英语达人帮忙回答

下面是一个人的听力独白题目是说这个人是谁然后答案是劫机者但是我看了很久就是没看出来请问怎么看出来他是劫机者的啊

EverybodyagreesI'mjustordinary.Myfaceisordinary,myvoiceisordinary,myclothesareordinary.Everythingaboutmeisordinary.'What'sFranklike?'theysay.'Frank?Oh—youknow,ordinary.'theysay.Nowlookatthatmantworowsinfront.He'snotordinary.InfactIcan'tseeanybodyapartfrommewhois.Eventhisfellownexttome.Quiteordinaryonthewhole,Isuppose.Butthere'ssomethingabit...somethingabitoddabouthismouth.Mustn'tcatchhiseye.Mightstartaconversation.Don'twantthat.Interestingthathewasjustinfrontofmeinthequeue.

Theylookedinhisbag,theylookedinhispockets—madehimtakehisshoesoffeven.Mm—they'venearlyfinishedwiththefood—thoughshedidn'ttakemyglasswhenshecollectedmytray.Ah—she'spressedherbuttonagain.Probablywantsanotherginandtonic.Hadfouralready.Orisitfive?Notbad,though.Atleastnotinthislight.Good—someofthemaregettingtheirblanketsdownnow.Ireckonthatinabouthalfanhourit'llallbequiet.Andthen...Ofcoursetheylookedinmybriefcasetoo.Didn'tlookhere,though,didthey?Oh,no.Hah!Thoughtheythinkotherwise,Iknowverywellwhothosetwointhebackroware.NoticedthemwhenIwenttothetoilet.Buttheywon'tshoot.NotaslongasIhavethisinmyhand,theywon't.Andit'ssosmall.Marvellouswhattheycandothesedays.Justaboutnow,ifIweresittinginfunnymouth'sseatandnotbytheaisle—justaboutnow,Icouldprobablylookdownandseethemountainsgleaminginthemoonlight.Ilikethat.Mm.Well,nowImustgoovermyspeechagain.Mustn'tforgetwhatmydemandsare,must