Carl Murphy was a human male who was employed at the Federation Embassy on Qo'noS from at least 2376 (KE novel: A Burning House) to 2379. Murphy worked at a large desk centered in the second floor hallway of the Embassy. It was his duty to handle all of Worf's in-embassy appointments.

In 2379, the Klingon group Klahb attempted to take over the embassy. When a steward named Kl'rt fired a Breen disruptor at Worf, Murphy immediately pressed the panic button on his desk, but it was disabled due to a dampening field. Kl'rt then turned and fired on Murphy, killing him just as Worf fired on Kl'rt.

Following the attack, Worf was recalled to Earth and among other things, he personally conveyed his condolences to Murphy's family. (TNG novel: A Time for War, A Time for Peace)