"Things are getting--hottish, anyway.

As I say, what do you make of this?
Of course, you've come to some conclusion ?" "Yes," answered Chettle, taking up his glass and silently bowing his acknowledgments.

"I have! The only one I could come to.

The man who sent this photograph to Lydenberg, to help him to identify your cousin at sight, is the man who afterwards lured Lydenberg into that part of Hull High Street, and shot him dead.

In plain words, the master shot his man--when he'd done with him.