Scene Six:
Vincent Mancini meets with the Barzini Family and a couple Russians. They tell Vincent they'll stand by him if he wants to try and sieze power. After a long discussion, Vincent and Grazzi reach an agreement. Vincent does want to be Don, after all.
Scene Seven:
Back with the Corleone Family, they receive a phone call saying that Kay and Mary (who were visiting some of Kay's relatives in New Hampshire) have been kidnapped.