<□>Investigat□rsle□r□ed□□atthegroupha□beenfrie□dsfory□□rs,b□trecentlythereh□dbeent□nsiona□ongth□m□Rumorsof□isa□reemen□sa□dargu□ents□uringthetripbe□antosurface,le□dinga□thori□□estospeculatewhetherfoulplay□□sinvolve□.Eachm□□berofthe□rouph□dadiffe□entstor□□ote□l,a□dtheinco□si□te□ci□□intheira□coun□□o□lya□dedt□□hemy□teryofthemi□singnine□ In□e□tigatorsl□arned□h□tth□gro□phadbe□nf□iendsforyea□□,butrecently□h□rehadbeentensi□namongth□m.Rumorsofdisagreementsandargumentsduringt□et□ipbegantosurfac□,□ead□ngaut□ori□iesto□peculat□whetherfoulpl□ywas□nvolved.Eachme□b□rofthegroup□adadiffere□□□tor□tote□l□andtheinco□sist□□ciesi□□he□raccou□ts□n□yaddedtothemysteryo□themissi□gnine□ Investigators□earnedthatthegr□uph□□□eenf□ien□sforye□□s,□□trecentlythe□eh□dbeent□nsionamon□them.Rumor□ofdi□a□reeme□tsan□argum□ntsduringthetripbega□tosurface,l□ad□ng□u□hori□i□□□□sp□cula□ewhe□h□r□oul□laywasi□vo□□ed.Eac□memb□rofthegrouphadadifferentst□rytotell,andtheincons□□tenciesintheiracc□untsonly□dd□□to□he□y□te□yoft□emi□singni□e. Investiga□ors□ear□e□tha□the□ro□phadbeenfriendsforyears,butrecentlytherehadbeentensio□□mong□hem.Rum□rsofdisagreement□a□dargu□entsd□r□□gthetripbegantosurface,leadingaut□oritiestospec□latewhetherfoul□laywasinvolved.Eachmemb□rofthegro□pha□□□iffe□□nt□□ory□otell,an□theinconsi□tenciesinthe□□accounts□□lyadded□o□□□m□stery□fthe□issingnine.