r　as　closely　as　possible。　When　the　conductor　es　to　make　up　the　bed；　she　tells　him　the　prepared　story　about　having　left　her　maid　behind　in　Paris；　and　whilst　he　is　making　up　the　berth；　she　stands　looking　out　of　the　window；　so　that　her　back　is　towards　the　corridor　and　people　passing　along　there。　That　was　a　wise　precaution；　because；　as　we　know；　Miss　Grey　was　one　of　those　passing；　and　she　among　others；　was　willing　to　swear　that　Mrs　Kettering　was　still　alive　at　that　hour。〃

〃Go　on；〃　said　Van　Aldin。

〃Before　getting　to　Lyons；　Ada　Mason　arranged　her　mistress's　body　in　the　bunk；　folded　up　the　dead　woman's　clothes　neatly　on　the　end　of　it；　and　herself　changed　into　a　man's　clothes　and　prepared　to　leave　the　train。　When　Derek　Kettering　entered　his　wife's　partment；　and；　as　he　thought；　saw　her　asleep　in　her　berth；　the　scene　had　been　set；　and　Ada　Mason　was　hidden　in　the　next　partment　waiting　for　the　moment　to　leave　the　train　unobserved。　As　soon　as　the　conductor　had　swung　himself　down　on　to　the　platform　at　Lyons；　she　follows；　slouching　along　as　though　just　taking　a　breath　of　air。　At　a　moment　when　she　is　unobserved；　she　hurriedly　crosses　to　the　other　platform；　and　takes　the　first　train　back　to　Paris　and　the　Ritz　Hotel。　Her　name　has　been　registered　there　as　taking　a　room　the　night　before　by　one　of　Knighton's　female　acplices。　She　has　nothing　to　do　but　wait　there　placidly　for　your　arrival。　The　jewels　are　not；　and　never　have　been；　in　her　possession。　Kettering　had　them。　No　suspicion　attaches　to　him；　and；　as　your　secretary；　he　brings　them　to　Nice　without　the　least　fear　of　discovery。　Their　delivery　there　to　Monsieur　Papopolous　is　already　arranged　for　and　they　are　entrusted　to　Mason　at　the　last　moment　to　hand　over　to　the　Greek。　Altogether　a　very　neatly　planned　coup；　as　one　would　expec