you　at　your　hotel　at　eleven　o'clock　tomorrow　morning。　Until　then；　say　nothing　to　anyone。〃

Chapter　22

M。　PAPOPOULOS　AT　BREAKFAST

M。　Papopolous　was　at　breakfast。　Opposite　him　sat　his　daughter；　Zia。

There　was　a　knock　at　the　sitting…room　door；　and　a　chasseur　entered　with　a　card　which　he　brought　to　Mr　Papopolous。　The　latter　scrutinized　it；　raised　his　eyebrows；　and　passed　it　over　to　his　daughter。

〃Ah！〃　said　M。　Papopolous；　scratching　his　left　ear　thoughtfully；　〃Hercule　Poirot。　I　wonder　now。〃

Father　and　daughter　looked　at　each　other。

〃I　saw　him　yesterday　at　the　tennis；〃　said　M。　Papopolous。　〃Zia；　I　hardly　like　this。〃

〃He　was　very　useful　to　you　once；〃　his　daughter　reminded　him。

〃That　is　true；〃　acknowledged　M。　Papopolous；　〃also　he　has　retired　from　active　work；　so　I　hear。〃

These　interchanges　between　father　and　daughter　had　passed　in　their　own　language。　Now　M。　Papopolous　turned　to　the　chasseur　and　said　in　French：

〃Faites　monter　ce　monsieur。〃

A　few　minutes　later　Hercule　Poirot；　exquisitely　attired；　and　swinging　a　cane　with　a　jaunty　air；　entered　the　room。

〃My　dear　M。　Papopolous。〃

〃My　dear　M。　Poirot。〃

〃And　Mademoiselle　Zia。〃　Poirot　swept　her　a　low　bow。

〃You　will　excuse　us　going　on　with　our　breakfast；〃　said　M。　Papopolous；　pouring　himself　out　another　cup　of　coffee。　〃Your　call　is　…　ahem！　…　a　little　early。〃

〃It　is　scandalous；〃　said　Poirot；　〃but　see　you；　I　am　pressed。〃

〃Ah！〃　murmured　M。　Papopolous；　〃you　are　on　an　affair　then？〃

〃A　very　serious　affair；〃　said　Poirot；　〃the　death　of　Madame　Kettering。〃

〃Let　me　see；〃　M。　Papopolous　looked　innocently　up　at　the　ceiling；　〃that　was　the　lady　who　died　on　the　Blue　Train；　was　it　not？　I　saw　a　mention　of　it　in　the　papers