...every single bit of it.
You have to realize the level of manipulation that this woman had been involved with.
Of course she is not going to give her husband "the vitamins" at home, he would not have taken them. The only way to get them into Ted Chase's digestive system would be to have the manipulated bartender (Jesse White of "Harvey") slip Ted a Radiation-Mickey.
There are also other things to consider, a person in a thunderstorm would not necessarily close the windows, especially if it were humid outside like it would be during any thunderstorm in Southern California. I sometimes keep my windows open during thunderstorms. There was also an argument about some glass enclosing a balcony, but that would be no issue considering the angle of the proposed sniper-scope use.
Everybody knew this woman was bad and everybody hated her guts, even the children with her ill. My god what a horrible person, the rottenest person of any Perry Mason episode, ever.
This episode includes Ann Rutherford, far away from the Oregon Trail and Andy Hardy. And there was kind of a Shelley Winters clone, but it was actually an actress name Jeff Donnell. And of course William Schallert, far away from "deep space station K-7", "Deep Space 9", and any Quadro-triticale or Tribbles or Bajoran musical gadgets.
Actually I consider this one of the most clever Perry Mason episodes of all time, because you really don't know what had happened until the very last minute, and for once we didn't have a screaming or crying confession in the witness booth. sometimes those are too much. But, this was the second time this kind of reveal had been used in a Perry Mason episode, where an injury was revealed like this. The first time was in S02E15, "TCOT Foot-loose Doll" and it is Barton McLane from treasure of the Sierra Madre who was Perry's victim that time.