When a bachelor plummets to his death after a one-night stand, the investigation leads to a shocking discovery that might derail Ryan's wedding.
On the 10th anniversary of 9/11, the team reflect on specific moments from that day that have stayed in their minds ever since.
Jack looks into a woman from the killer's past; Betty and Kent go to a club in search of a victim; Karen receives a job offer; a menacing former flame tries to reconnect with Betty.
A move to Houston for the familes changes roles for Trudy, Marge and the women as the world faces crisis.
Trudy faces a moral dilemma when she learns a training program for women astronauts is under threat while John Glenn considers a career in politics.