You are taking it for granted that nine o'clock is the hour appointed for King Monmouth's butchery." "What else ?" asked Wilding, impatient to be off.
They were standing in the street under the sign of The Ship, by which Jonathan Edney Mr.Trenchard's landlord--distinguished his premises and the chandler's trade he drove there.

Trenchard set a detaining hand on Mr.Wilding's arm.
"Nine o'clock is the hour appointed for supper.

It is odds the Duke will be a little late, and it is more than odds that when he does arrive, the assassins will wait until the company is safely at table and lulled by good eating and drinking.

You had overlooked that, I see.

It asks an old head for wisdom, after all.