Explain the task assigned to McMurdo by McGinty.

McGinty ordered the newspaper man to be beaten. McMurdo was to be the lookout.

“Here, you,” said Baldwin to McMurdo, “you can stand below at the door and see that the road is kept open for us. Arthur Willaby can stay with you. You others come with me. Have no fears, boys; for we have a dozen witnesses that we are in the Union Bar at this very moment.”