Can you name this documentary?

All I really remember was it was about a bi-racial girl whose step dad was Larry Storch from F-Troop. Larry Storch was not the focus, just a strange side note.

I believe I saw it on PBS.

Secret Daughter

http://www.pbs.org/wgbh/pages/frontline/shows/secret/etc/synopsis.html

You ROCK!

Off to Netflix.