This gentleman was having his warm bath, preparatory to going to bed.

So Robertson told the detective.

However, Mr.Knopf insisted on talking to Mr.Howard through his bath-room door.

Mr.Knopf thanked him for all the trouble he was taking, and felt sure that he and Mr.Shipman would soon recover possession of their diamonds, thanks to the persevering detective.
"He! he! he!" laughed the man in the corner.

"Poor Mr.Howard.