'Blue Bloods: 'Guilt By Association' (Video)

When a key witness in Danny’s case is killed just before testifying, Erin angers Danny by enlisting Anthony (Steve Schrippa) to help him find the killer. Also, Robert Lewis (Michael Imperioli) tries to force Frank to publicly support the Attorney General’s investigation of the use of excessive force by police, and Eddie and Jamie get the call for an attempted suicide.