Katherine McPhee to Guest Star on CSI: NY. Actress to play a singer. Evan Jacobs — February 19, 2009 Facebook Twitter Reddit Email Comment In a story from The Hollywood Reporter, Katharine McPhee will make her TV debut as an actress this April on the CBS' crime drama CSI: NY. McPhee will play a singer. She has been on TV before. In 2007 she played herself on ABC's Ugly Betty.