Shadow saw that my eyes were upon him (or her), and also that I had recognized him.
McGinnis had been so plied with drink by Shadow, that he was too drunk to notice or understand the significance of a motion of the mysterious detective's hand.
Yet it said to me as plainly as words could have done:
"Be circumspect. Be careful. Do not betray me. Go away, and leave me to alone work out the scheme I have laid."
I obeyed.
I turned on my heel and left the place. As I was about to pass through the door I glanced back.
McGinnis was becoming very affectionate, and was winding his arm about Daisy's waist.
Since Daisy was Shadow we shall not mystify the reader, but simply speak of him by the name to which we are accustomed.
"Say yes, Daisy, won't you?" said McGinnis, with a slobber which he meant for a kiss.
An expression of intense disgust on the other's face was not noticed by the drunken villain.