Keisha Scott aka "Summer Diamond" was a dancer at Ian Hitch's nightclub who was also the one who had slept with Willie Taylor. She was later identified by the tattoo of a bulldog on her rear end and was brought into NCIS so that Leroy Jethro Gibbs could interview her while giving Abigail Sciuto a chance to get a DNA swab from Keisha/Summer so that she could compare the DNA on the condoms found in Taylor's apartment to see if they matched Summer's.