A gentleman called on him, soon after he had gone out, on important business.

This gave me an excuse for following him to Mr.Varleigh's rooms with the visitor's card, and I took the opportunity.
I heard them at high words on my way upstairs, and waited a little on the landing.

The Captain was in one of his furious rages; Mr.Varleigh was firm and cool as usual.

After listening for a minute or so, I heard enough (in my opinion) to justify me in entering the room.

I caught my master in the act of lifting his cane--threatening to strike Mr.
Varleigh.