It shouldn't be rated too highly." "I'm traveling by your train," cried Ingerman.
"So I understood," said Furneaux over his shoulder.
There was silence for a moment after he had gone.

Ingerman looked thoughtful, even puzzled.

He was casting back in his mind to discover just how and when the detective "understood" that his departure was imminent, since he himself had only arrived at a decision after leaving the chemist's.
"That chap is no good," announced Elkin.

"I'll back old Robinson against him any day." "Sh-s-sh! He may 'ear you," muttered the landlord.
"Don't care if he does.

Cornhill! What the blazes has Cornhill to do with the murder at The Hollies ?" Ingerman appreciated the value of that concluding phrase.