pinks　and　blue　hyacinths　would　bloom。　Miss　Viner　was　lying　in　a　large　Victorian　bedstead。　A　tray　with　the　remains　of　breakfast　had　been　pushed　to　one　side　and　she　was　busy　opening　her　correspondence　and　making　various　caustic　ments　upon　it。

Katherine　had　an　open　letter　in　her　hand　and　was　reading　it　through　for　the　second　time。　It　was　dated　from　the　Ritz　Hotel；　Paris。

〃Chère　Mademoiselle　Katherine　（it　began）；

〃I　trust　that　you　are　in　good　health　and　that　the　return　to　the　English　winter　has　not　proved　too　depressing。　Me；　I　prosecute　my　inquiries　with　the　utmost　diligence。　Do　not　think　that　it　is　the　holiday　that　I　take　here。　Very　shortly　I　shall　be　in　England；　and　I　hope　then　to　have　the　pleasure　of　meeting　you　once　more。　It　shall　be　so；　shall　it　not？　On　arrival　in　London　I　shall　write　to　you。　You　remember　that　we　are　the　colleagues　in　this　affair？　But　indeed　I　think　you　know　that　very　well。

〃Be　assured；　Mademoiselle；　of　my　most　respectful　and　devoted　sentiments。

〃Hercule　Poirot。〃

Katherine　frowned　slightly。　It　was　as　though　something　in　the　letter　puzzled　and　intrigued　her。

〃A　choir　boys'　picnic　indeed；〃　came　from　Miss　Viner。　〃Tommy　Saunders　and　Albert　Dykes　ought　to　be　left　behind；　and　I　shan't　subscribe　to　it　unless　they　are。　What　those　two　boys　think　they　are　doing　in　church　on　Sundays　I　don't　know。　Tommy　sang；　'O　God；　make　speed　to　save　us；'　and　never　opened　his　lips　again；　and　if　Albert　Dykes　wasn't　sucking　a　mint　humbug；　my　nose　is　not　what　it　is　and　always　has　been。〃

〃I　know；　they　are　awful；〃　agreed　Katherine。

She　opened　her　second　letter；　and　a　sudden　flush　came　to　her　cheeks。　Miss　Viner's　voice　in　the　room　seemed　to　recede　into　the　far　distance。

When　she　came　back　to　a　sense　of　her　surroundi