Did Danny and Baez find out the truth about a teen's suicide?
That was addressed on Blue Bloods Season 7 Episode 20 when the pair thought that the apparent suicide was actually a homicide.
Meanwhile, Frank investigated potential misconduct in the mayor's office, but it brought some bad luck with it.
Also, Erin was asked to help a witness from one of her old cases, but did she agree to it?
Use the video above to watch Blue Bloods online to get caught up on the latest drama for the characters.
Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.