I thought Angie really was realistic as a younger self, her (WAY more practical!) ponytail and less makeup, and especially her lighter voice really worked for me. Cross looked and sounded exactly the same.
I had a little trouble following this episode. It didn't help I kept falling asleep and having to rewind. Also I kept seeing the killer as Holly Hunter's boyfriend from Saving Grace from a few years back. Why did he kill everyone? Dirty cop, stole money. Was that it?
The ending was a little heartbreaking for Vega and Angie. I think Vega has feelings for Angie, and Angie is oblivious. I think she has feelings for him as a partner, but it doesn't go beyond that for her. I am so sick of the work partners on TV always moving to a romantic partnership, but, yikes! Vega is such a dear!