True Turnbull that look when he is shooting through the locked revolving door I reckon Cuneo was more scared of it than the bullet

Now I get it! Michael's “all the people today” refers to “Michael's gangster associates”

What he mean -- bad timing -- it couldn't be helped though

Would Kay marry him if she'd known he personally murdered

Good question.

Probably not. Michael told Kay he was distanced from his family, as in "That's my family, Kay--it's not me." That was enough for her. I doubt she'd have married him, after Sicily, if he admitted he'd killed Mac and Sol. He had always denied it.

I was always struck by a cultural difference between Sicily and the US. When Michael meets Sr. Vitelli, he says he's "an American hiding from the police of mycountry." Vitelli accepts that without blinking because in Sicily at that time, the authorities were regarded as foes. If Michael were wooing an American girl and said that to her father, he'd probably turn Michael in to the cops.

It is fleshed out in the book that Kay didn't care even if he'd killed Mac and Sol.
I think she also knew he had been with another woman

In the movie, Kay turns up at the compound only to be turned away by Tom. In the novel, this event is fleshed out in some detail. Kay meets with Mama C, who all but tells her Michael killed S & M. She goes away in shock.

This is from memory, as I have misplaced my hardcopy. But I'm confident in its accuracy.

Mama told her but he denied it How did he explain his absence

In the novel, Kay's father pretty much says that, tells the defectives he'll call them if Michael shows up there.

It is fleshed out in the book the Detectives tried to embarrass Kay by threatening to tell her parents about her hotel stays with Michael but she called out their bluff and I think her parents were not too fussed about anything but he'll call them as if he would

Tough one However Kay knew that the Corleones have men killed ie: order men to be killed but Kay still married Michael
oh, well if Michael had personally murdered but nobody was hurt...!