Professor Thomas Halver is a Cambridge mathematics fellow with a white, bushy beard. He complains about his former student Riggs recommending an apprentice girl for Trinity College admission, calling her a 'factory brat' and doubting her talent due to her gender. He reads Lucy's patent documents and deduction process, acknowledging they are quite good but still deeming it impossible for a girl to enter Trinity. After Moriarty's persuasion, he reluctantly agrees to write the letter, muttering that someone will stop her anyway.
