Summit New Jersey

A few more questions about the Monk finale before it disappears into TV immortality. Just some niggling thoughts that weren't really addressed in the two-part wrap up.

1. Why did Joey Kazarinski choose to kill Monk with poison?
Joey was a killer for hire. He used a bomb to kill Trudy, but shot Dr. Nash. They never said how Wendy Stroud was killed, just that she was buried under the sundial at the judge's house. So, when the judge offered Joey another payday -- killing Monk -- why didn't Joey choose a direct approach and shoot Adrian? Or he could have blown up Monk's apartment. There were any number of ways to kill him, but poisoning the wipes was perhaps the most complicated. And a ricin derivative? How did he manage to acquire that? If it had been arsenic or something, that could have been bought at a hardware store. They never really explained the poison or the reason for that method of murder.