Adrian Monk: You recognize these numbers?
Sharona: No. Will you slow down? I'm in heels.
Adrian Monk: Well, I knew I'd heard these numbers before. I called Lieutenant Disher, and I asked him to check his notes just to make sure. Remember when Kevin Dorfman came downstairs after the murder? He started reeling off his old addresses. Sharona, Kevin won the lottery on Thursday night. 17, 26, 34. These are his old house numbers. He played the same numbers every week. A lot of people do.
Sharona: Okay, wait, wait, wait. Kevin won $43 million? Why didn't he say anything?
Adrian Monk: Because he didn't know. He still doesn't. But Vicki knows. Kevin bought his lottery tickets at the Stop-N-Go every week. After awhile, Vicki and the other clerk, probably her accomplice, got to know his lucky numbers by heart. When the numbers were drawn, they realized Kevin had won. They knew he lived alone, that he didn't have many friends, and it occurred to them that maybe, just maybe, he didn't know he had won. They came up with a plan. Probably Vicki's idea.
Sharona: Why Vicki?
Adrian Monk: Because, the other guy's dead. Later, on some pretext, Vicki woke Kevin up. For a woman like her, the rest was easy. All Vicki had to do was keep Kevin distracted for a day or two. She didn't let him answer his phone. She probably unplugged the T.V. She didn't want him to see or even think about the winning lottery numbers.
Sharona: Wait, I still don't get it. Why did they kill your paperboy?
Adrian Monk: They didn't know it was my paper. They thought it was Kevin's, and they couldn't afford to let him see this. It had nothing to do with me.
Sharona: Why didn't she just steal the ticket?
Adrian Monk: The time stamp on the ticket would match the time code from the store security camera. He could prove it was his.
Sharona: They're getting married.
Adrian Monk: Exactly. That was her plan from the beginning to get him to marry her before he knew he was worth a fortune.