“Yes.”
“Is there any way I can get a key to your apartment?”
“Yes, I keep my mailbox unlocked and there’s an extra key in the bottom of the mailbox.”
Mason said, “Get back here just as quickly as you can. Is there a telephone in your flat?”
“Yes.”
“What’s the number?”
“Graymore six-nine-four-seven.”
“All right,” Mason said. “Don’t tell anyone about this conversation with me, do you understand?”
“Yes.”
“Be seeing you,” Mason said, and hung up.