Accused (1925)

Cyrus Braidwood has a secret. His daughter Helen isn't actually his daughter--her father is a murderer, and Braidwood has been raising her as his own because he has her father's written confession hidden. One day her father manages to get ahold of the confession. Helen shows up at his apartment looking for it, which culminates in her and a young man she meets there being taken prisoner by a criminal gang.