Law & Order/Recap/S15/E13 Aint No Love

The victim of the episode is found in a recording studio, shot to death. The gunshot was silenced by a glass bottle. The victim is identified as a well-known hip-hop DJ. Fontana and Green believe that the truth behind a rap legend's murder may be found in some rap lyrics. The rap legend's protege is brought to trial, but when he pays a friend to confess, the prosecution worries that neither person can be found guilty. Arthur Branch fires Serena Southerlyn from the DA's office.

And at the very end Serena Southerlyn delivers her (in)famous final line:

Say it with me now: "Is this because I'm a lesbian?"