The　Mystery　of　the　Yellow　Room
  by　Gaston　Leroux
  CHAPTER　I
  In　Which　We　Begin　Not　to　Understand
  It　is　not　without　a　certain　emotion　that　I　begin　to　recount　here
  the　extraordinary　adventures　of　Joseph　Rouletabille。　　Down　to　the
  present　time　he　had　so　firmly　opposed　my　doing　it　that　I　had　come
  to　　despair　of　ever　publishing　the　most　curious　of　police　stories
  of　the　past　fifteen　years。　　I　had　even　imagined　that　the　public
  would　never　know　the　whole　truth　of　the　prodigious　case　known　as
  that　of　The　Yellow　Room；　out　of　which　grew　so　many　mysterious；
  cruel；　and　sensational　dramas；　with　which　my　friend　was　so　closely
  mixed　up；　if；　propos　of　a　recent　nomination　of　the　illustrious
  Stangerson　to　the　grade　of　grandcross　of　the　Legion　of　Honour；　an
  evening　journal　…　in　an　article；　miserable　for　its　ignorance；　or
  audacious　for　its　perfidy　…　had　not　resuscitated　a　terrible
  adventure　of　which　Joseph　Rouletabille　had　told　me　he　wished　to　be
  for　ever　forgotten。
  The　Yellow　Room！　　Who　now　remembers　this　affair　which　caused　so
  much　ink　to　flow　fifteen　years　ago？　　Events　are　so　quickly
  forgotten　in　Paris。　　Has　not　the　very　name　of　the　Nayves　trial　and
  the　tragic　history　of　the　death　of　little　Menaldo　passed　out　of
  mind？　　And　yet　the　public　attention　was　so　deeply　interested　in　the
  details　of　the　trial　that　the　occurrence　of　a　ministerial　crisis
  was　completely　unnoticed　at　the　time。　　Now　The　Yellow　Room　trial；
  which；　preceded　that　of　the　Nayves　by　some　years；　made　far　more
  noise。　　The　entire　world　hung　for　months　over　this　obscure　problem
  …　the　most　obscure；　it　seems　to　me；　that　has　ever　challenged　the
  perspicacity　of　our　police　or　taxed　the　conscience　of　our　judges。
  The　solution　of　the　problem　baffled　everybody　who　tried　to　find　it。
  It　was　like　a　dramatic　rebus　with　which　old　Europe　and　new　America
  alike　became　fascinated。　　That　is；　in　truth　…　I　am　permitted　to　say；
  because　there　cannot　be　any　author's　vanity　in　all　this；　since　I
  do　nothing　more　than　transcribe　facts　on　which　an　exceptional
  documentation　enables　me　to　throw　a　new　light　…　that　is　because；
  in　truth；　I　do　not　know　that；　in　the　domain　of　reality　or
  imagination；　one　can　discover　or　recall　to　mind　anything　comparable；
  in　its　mystery；　with　the　natural　mystery　of　The　Yellow　Room。
  That　which　nobody　could　find　out；　Joseph　Rouletabille；　aged　eighteen；
  then　a　reporter　engaged　on　a　leading　journal；　succeeded　in
  discovering。　　But　when；　at　the　Assize　Court；　he　brought　in　the　key
  to　the　whole　case；　he　did　not　tell　the　whole　truth。　　He　only　allowed
  so　much　of　it　to　appear　as　sufficed　to　ensure　the　acquittal　of　an
  innocent　man。　　The　reasons　which　he　had　for　his　reticence　no　longer
  exist。　　Better　still；　the　time　has　come　for　my　friend　to　speak　out
  fully。　　You　are　going　to　know　all；　and；　without　further　preamble；
  I　am　going　to　place　before　your　eyes　　the　problem　of　The　Yellow
  Room　as　it　was　placed　before　the　eyes　of　the　entire　world　on　the
  day　following　the　enactment　of　the　drama　at　the　Chateau　du　Glandier。
  On　the　25th　of　October；　1892；　the　following　note　appeared　in　the
  latest　edition　of　the　〃Temps〃：
  〃A　frightful　crime　has　been　committed　at　the　Glandier；　on　the　border
  of　the　forest　of　Sainte…Genevieve；　above　Epinay…sur…Orge；　at　　the
  house　of　Professor　Stangerson。　　On　that　night；　while　the　master　was
  working　in　his　laboratory；　an　attempt　was　made　to　assassinate
  Mademoiselle　Stangerson；　who　was　sleeping　in　a　chamber　adjoining
  this　laboratory。　　The　doctors　do　not　answer　for　the　life　of　Mdlle。
  Stangerson。〃
  The　impression　made　on　Paris　by　this　news　may　be　easily　imagined。
  Already；　at　that　time；　the　learned　world　was　deeply　interested　in
  the　labours　of　Professor　Stangerson　and　his　daughter。　　These　labours
  …　　the　first　that　were　attempted　in　radiography　…　served　to　open
  the　way　for　Monsieur　and　Madame　Curie　to　the　discovery　of　radium。
  It　was　expected　the　Professor　would　shortly　read　to　the　Academy　of
  Sciences　a　sensational　paper　on　his　new　theory；　…　the　Dissociation
  of　Matter；　…　a　theory　destined　to　overthrow　from　its　base　the　whole
  of　official　science；　which　based　itself　on　the　principle　of　the
  Conservation　of　Energy。　　On　the　following　day；　the　newspapers　were
  full　of　the　tragedy。　　The　〃Matin；〃　among　others；　published　the
  following　article；　entitled：　　〃A　Supernatural　Crime〃：
  〃These　are　the　only　details；〃　wrote　the　anonymous　writer　in　the
  〃Matin〃　…　〃we　have　been　able　to　obtain　concerning　the　crime　of　the
  Chateau　du　Glandier。　　The　state　of　despair　in　which　Professor
  Stangerson　is　plunged；　and　the　impossibility　of　getting　any
  information　from　the　lips　of　the　victim；　have　rendered　our
  investigations　and　those　of　justice　so　difficult　that；　at　present；
  we　cannot　form　the　least　idea　of　what　has　passed　in　The　Yellow　Room
  in　which　Mdlle。　Stangerson；　in　her　night…dress；　was　found　lying　on
  the　floor　in　the　agonies　of　death。　　We　have；　at　least；　been　able
  to　interview　Daddy　Jacques　…　as　he　is　called　in　the　country　…　a
  old　servant　in　the　Stangerson　family。　　Daddy　Jacques　entered　The
  Room　at　the　same　time　as　the　Professor。　　This　chamber　adjoins　the
  laboratory。　　Laboratory　and　Yellow　Room　are　in　a　pavilion　at　the
  end　of　the　park；　about　three　hundred　metres　（a　thousand　feet）　from
  the　chateau。
  〃'It　was　half…past　twelve　at　night；'　this　honest　old　man　told　us；
  'and　I　was　in　the　laboratory；　where　Monsieur　Stangerson　was　still
  working；　when　the　thing　happened。　　I　had　been　cleaning　and　putting
  instruments　in　order　all　the　evening　and　was　waiting　for　Monsieur
  Stangerson　to　go　to　bed。　　Mademoiselle　Stangerson　had　worked　with
  her　father　up　to　midnight；　when　the　twelve　strokes　of　midnight　had
  sounded　by　the　cuckoo…clock　in　the　laboratory；　she　rose；　kissed
  Monsieur　Stangerson　and　bade　him　good…night。　　To　me　she　said　〃bon
  soir；　Daddy　Jacques〃　as　she　passed　into　The　Yellow　Room。　　We　heard
  her　lock　the　door　and　shoot　the　bolt；　so　that　I　could　not　help
  laughing；　and　said　to　Monsieur：　〃There's　Mademoiselle　double…locking
  herself　in；　…　she　must　be　afraid　of　the　'Bete　du　bon　Dieu！'〃
  Monsieur　did　not　even　hear　me；　he　was　so　deeply　absorbed　in　what　he
  was　doing。　　Just　then　we　heard　the　distant　miawing　of　a　cat。　　〃Is
  that　going　to　keep　us　awake　all　night？〃　I　said　to　myself；　for　I
  must　tell　you；　Monsieur；　that；　to　the　end　of　October；　I　live　in　an
  attic　of　the　pavilion　over　The　Yellow　Room；　so　that　Mademoiselle
  should　not　be　left　alone　through　the　night　in　the　lonely　park。　　It
  was　the　fancy　of　Mademoiselle　to　spend　the　fine　weather　in　the
  pavilion；　no　doubt；　she　found　it　more　cheerful　than　the　chateau　and；
  for　the　four　years　it　had　been　built；　she　had　never　failed　to　take
  up　her　lodging　there　in　the　spring。　　With　the　return　of　winter；
  Mademoiselle　returns　to　the　chateau；　for　there　is　no　fireplace　in
  The　Yellow　Room。
  〃'We　were　staying　in　the　pavilion；　then　…　Monsieur　Stangerson　and
  me。　　We　made　no　noise。　　He　was　seated　at　his　desk。　　As　for　me；　I
  was　sitting　on　a　chair；　having　finished　my　work　and；　looking　at　him；
  I　said　to　myself：　　〃What　a　man！　　…　what　intelligence！　　…　what
  knowledge！〃　　I　attach　importance　to　the　fact　that　we　made　no　noise；
  for；　because　of　that；　the　assassin　certainly　thought　that　we　had
  left　the　place。　　And；　suddenly；　while　the　cuckoo　was　sounding　the
  half　after　midnight；　a　desperate　clamour　broke　out　in　The　Yellow
  Room。　　It　was　the　voice　of　Mademoiselle；　crying　　〃Murder！　　…　murder！
  …　help！〃　　Immediately　afterwards　revolver　shots　rang　out　and　there
  was　a　great　noise　of　tables　and　furniture　being　thrown　to　the
  ground；　as　if　in　the　course　of　a　struggle；　and　again　the　voice　of
  Mademoiselle　calling；　〃Murder！　　…　help！　　…　Papa！　　…　Papa！　　…〃
  〃'You　may　be　sure　that　we　quickly　sprang　up　and　that　Monsieur
  Stangerson　and　I　threw　ourselves　upon　the　door。　　But　alas！　　it
  was　locked；　fast　locked；　on　the　inside；　by　the　care　of　Mademoiselle；
  as　I　have　told　you；　with　key　and　bolt。　　We　tried　to　force　it　open；
  but　it　remained　firm。　　Monsieur　Stangerson　was　like　a　madman；　and
  truly；　it　was　enough　to　make　him　one；　for　we　heard　Mademoiselle
  still　calling　　〃Help！　　…　help！〃　　Monsieur　Stangerson　showered
  terrible　blows　on　the　door；　and　wept　with　rage　and　sobbed　with
  despair　and　helplessness。
  〃'It　was　then　that　I　had　an　inspiration。　　〃The　assassin　must　have
  entered　by　the　window！〃　I　cried；　…　〃I　will　go　to　the　window！〃　and
  I　rushed　from　the　pavilion　and　ran　like　one　out　of　his　mind。
  〃'The　inspiration　was　that　the　window　of　The　Yellow　Room　looks　out
  in　such　a　way　that　the　park　wall；　which　abuts　on　the　pavilion；
  prevented　my　at　once　reaching　the　window。　　To　get　up　to　it　one　has
  first　to　go　out　of　the　park。　　I　ran　towards　the　gate　and；　on　my　way；
  met　Bernier　and　his　wife；　the　gate…keepers；　who　had　been　attracted
  by　the　pistol　reports　and　by　our　cries。　　In　a　few　words　I　told　them
  what　had　happened；　and　directed　the　concierge　to　join　Monsieur
  Stangerson　with　all　speed；　while　his　wife　came　with　me　to　open　the
  park　gate。　　Five　minutes　later　she　and　I　were　before　the　window　of
  The　Yellow　Room。
  〃'The　moon　was　shining　brightly　and　I　saw　clearly　that　no　one　had
  touched　the　window。　　Not　only　were　the　bars　that　protect　it　intact；
  but　the　blinds　inside　of　them　were　drawn；　as　I　had　myself　draw