Speaking of traitiors, why not Tom who Mike apparently insulted from time to time?

Fredo didn't know it was going to be a hit, so he couldn't have arranged to kill them. And how would Fredo know if Pentangeli was going to "bring his boys" to the meeting?

How would Rocco (limping) kill the assassins, throw them in the drainage ditch, then appear to have just showed up fromthe other end of the compound?

Why would the drapes be closed in the first place? Did Kay get undressed with them open?

Rocco kills Roth simply as a script device. It's drama. It makes no sense logically. But then there are many things inthe Trilogy that make little or no sense such as Apple continually reminds us about GFIII.

"Generosity. That was my first mistake."
"Experience must be our only guide; reason may mislead us."
"Instagram is Twitter for people who can't read."