Inves□iga□orsle□□n□dthatthegrouphad□eenfriendsforyears,b□trece□t□ytherehadbeentensionamongthem□□□□orsofd□sagreementsan□argum□ntsdu□i□gthetri□began□os□rface,l□ad□ngauthor□tiestospe□ulatew□eth□r□oulpl□□w□si□vol□ed.Eac□m□mberof□heg□ouphadadifferentstoryt□tell,an□theinc□ns□st□□□ie□i□the□racc□unt□onlyaddedt□themysteryofthemissingn□ne. Investiga□orslearnedthatthegr□□p□adbeenfriendsforyears,butrecen□lytherehadbeent□nsionam□ngthem.Rumo□sof□isagree□entsand□□gu□□n□sd□□in□thetripbega□tosurfa□e,le□ding□uth□ritiestos□ecul□t□whe□herf□u□□laywasinvo□ve□.Eachmember□fthegroupha□□differe□□□torytotell□□ndth□in□on□isten□i□sinth□i□accounts□nlyaddedtothemystery□fth□missin□nine. I□vestigatorslearnedth□t□hegrouphad□eenfrien□sfo□ye□rs,butrecentlyther□hadbeentensio□amongthem□R□m□rsofdisagr□e□entsandargum□nts□□r□n□□hetripbe□antosurf□ce,leadingauth□rit□est□specula□ewhe□he□foulpla□□asinvolve□□E□chmemberofthegrouphadad□□fer□□tstoryto□ell,andthei□consistenciesintheira□cou□□□onlyad□edtothemystery□ft□e□issingnine□ Inve□□igators□□arnedthatt□egrouphadbeenfriends□□ryea□s,butrecentlyt□□reh□dbeenten□iona□ongt□em.□u□orsofdisa□reement□andargume□tsduringthetripb□gantosurface,lea□ingauthoritie□□ospecul□tewheth□r□oul□laywas□nvolved.Eachme□b□r□fthe□rouphadadiffe□ent□t□rytotel□,and□h□i□□onsistenciesint□ei□□c□ountsonlyaddedtot□emys□eryofthemissingnine.