now? Plummer is in my office and the two men are in a cab outside. The bank opens at nine, and that is in Upper Holloway."

I seized my hat and made ready.

"You should keep your eyes open," Hewitt hinted, "before you get to the bank and when you leave, as well as while you're there. Do you remember how poor Mason was watched? Well, there is probably some watching going on now. Last night, on our way to the bank and back, I believe Plummer and I were watched pretty closely."