[SPOILER]Plot point Questions[/SPOILER]

i agree on point 1. unless there's some detail i've missed, his plan would have fallen apart if blood work was done in his autopsy.

perhaps harlan hoped that his death was such an obvious suicide that no blood work would be done. i certainly know almost nothing about such matters, but i think blood is generally tested in suicide cases to determine levels of intoxication, no? if that is indeed the case, that's something he would likely know as a crime writer.

regarding the tape: while they are walking through the grounds after taking the tape, marta is shown holding a magnet next it. the security guard had stated earlier that he erases the tapes via magnets, so she followed his lead & blanked the tape by the same method.

3. I have been pumping gas in my car for over 10 years. Yet a couple of years ago I almost absent mindedly put diesel in my tank -- thankfully they make it so it doesn't fit. This is a roundabout way of asking if it is reasonable to assume that a nurse with less than 10 years of experience can tell those two medications apart by feel.

1. He was protecting the maid from his grandson. He already suspected that his grandson switched the bottles. He knew that the goal was to pin the death on the maid. Immediately he mentioned that switching the bottles would be a good murder attempt, the maid mentions that 5 minutes is required for full symptoms to appear and 10 minutes required for death. He experienced no symptoms in 6 minutes.

Point No. 1 could be a plothole. But Harlan made sure that he was seen alive by his son walking down the stairs (which actually was Marta), so that would take 10 minutes after Marta left (i.e. it would surely take more than ten minutes for Marta to pack her bag & leave, say goodbye to Walt, enter the car, drive through the main gate, park the car, walk back to the house, climb up the wall panels, enter the secret window, get dressed into Harlan's gown and walk down the stairs) wouldn't it ?

So Walt would have testified that Harlan was seen on stairs almost 10 minutes after Marta left, which negates the possibility of Marta injecting him the Morphine overdose because otherwise he would've been dead or incapable to walk by the time he came to that staircase.

So it could mean that Harlan was poisoned by someone else and then that someone or Harlan himself slit his throat.

This ofcourse works only if we have to presume that it took Marta more than 10 minutes from the moment she left the house to get on the stairs with Harlan's nightgown on.