RAY DONOVAN
Showtime, 9:00 p.m. ET
In tonight’s episode, Person of Interest co-star Sarah Shahi, guest stars, playing an Armenian pop star. While that may be surprising in itself (Armenia has pop stars?), it’s especially notable because it allows Shahi to share scenes not only with Ray Donovan titular star Liev Schreiber, but with Ray’s assistant Lena, played by Katherine Moenning, who starred with Shahi on a previous Showtime series, The L Word.