The Handler is Declan Marsden’s direct superior within Beowulf: the voice at the other end of the encrypted telephone line that rings, usually at the worst moment, in his study. She is a ghost in the machine. She is present in Cambion entirely through telephone calls, her physical location never established, her name and rank not disclosed. She has, in the manuscript’s account, no body, no setting, and no past. She is, for the duration of Book One, a function.
Her voice is her only characterisation. The manuscript describes it as a collision of worlds — northern vowels crushed into the diamond-hard precision of years spent in elocution lessons. The class anxiety embedded in that description is not accidental: the northern vowels are still there, underneath, audible to someone listening for them. She has spent years learning to speak like the institution she serves. She has not quite succeeded, or has not quite wanted to.
She is separate from Amy. The two women operate at different levels: Amy delivers directives in person, on her own authority, with effects that manifest at the level of physics in the room. The Handler delivers institutional management, by phone, with the cool of a senior bureaucrat speaking down to a field operative she suspects of being insufficiently in line. Amy answers, in Cambion, to no one. The Handler answers to Amy. Whether the Handler knows this, and whether her institution does, is not addressed by Book One.