I□vestig□torsle□rne□thatthe□rouphadbeenfrien□sforyears,butrecentlythe□eh□□beentensi□n□mong□hem.Rumorsofdi□agreementsanda□guments□uringth□tripbegantosurfa□e,lea□ingauthor□tiestospeculatewhet□□rfoul□la□w□sinvolved.Ea□h□e□berofthegr□uph□dadifferentstory□□t□l□,andthei□□onsiste□ciesintheirac□oun□sonly□d□edtothemysteryofthemissingnine.□> I□□estig□□□□slearnedth□tthegro□□ha□been□rien□□fo□ye□rs□butrecently□her□□ad□ee□tensionamon□t□em.Rumorsof□is□□reeme□tsan□argument□duri□gth□trip□egantosurface,le□d□ng□□t□orities□ospec□late□hetherfoulpla□□asi□□olv□□.□achmem□eroftheg□ouph□da□i□ferents□orytotell,andtheinconsistenciesint□□iraccount□onlyadded□oth□□ysteryofthemi□singni□e. □p>Inve□t□gatorslearn□dthattheg□ouphadbeenfr□□□dsforyears,butrecent□ytherehadbeentensio□amongthem.Rum□□sof□isagreements□□□a□gum□ntsdurin□thetripbegantos□rfac□,leadinga□tho□itie□□ospecu□ate□heth□rf□ulplaywasinvolved.□ac□memb□ro□th□g□oup□adadifferen□st□ryto□ell,a□□thein□□nsistenciesintheir□c□ountsonlyaddedtothemystery□fthemis□in□nine.