The hidden men watched the gray-coated figure of Stanley Warwick as the detective entered the Marimba Apartments.
The arrival of this man seemed significant. Both watchers were tense.
“We’ll soon know,” replied Harry.
Three minutes went by. A buzz came from the corner of the room. It was the telephone, which had no bell. Harry went to the instrument and spoke in a low voice.
“Vincent,” he said. “Yes — Right — Man was noted from here — About five feet six — Gray coat — Short brisk walk — Description perfect— Right. Will report.”
He hung up the phone and turned to Clyde, who could barely see him in the light that came from the street.
“That was Burbank,” said Harry quietly. “Stanley Warwick went up to the fortieth-floor. Keep on watch while I report.”
He dialed a number on the phone. It was a private line, Clyde noted, not a phone connecting within the apartment. There was a short pause; then Harry evidently made the connection.
“Vincent,” he said. “Opposite Marimba. Observed man enter. Burke identified him. Stanley Warwick, detective. Burbank called in. Warwick up to forty.”
There was silence as Harry received his reply. Then: