There's not much to say about "Today I Do." The unsub is an insane person who thinks she's helping people by tying them tie and handling their every need. And she's not particularly scary--just batshit crazy in a non-threatening kind of way up until the end.
One of Emily's former colleagues unexpectedly dies, and we're getting a better picture of what happened. It seems like Emily was undercover and using a different name, got the guy from the end of last week's episode arrested, and then faked her death. But with her colleagues exposed, she's in danger.
Score: 8.3/10