lock ▁Hol mes . ▁Like ▁Hol mes , ▁Gr iss om ▁is ▁dis pass ion ate ▁with ▁a ▁fier ce ▁dev otion ▁to ▁logic ▁and ▁little ▁regard ▁for ▁soci etal ▁norm s ▁of ▁behavior ; ▁Gr iss om ▁once ▁sm ashed ▁must ard ▁j ars ▁in ▁a ▁gro c ery ▁store ▁to ▁illustrate ▁a ▁theory ▁(" I - 1 5 ▁Mur ders "), ▁much ▁as ▁Hol mes ▁once ▁pract iced ▁spe aring ▁a ▁p ig ▁in ▁a ▁but ch ers ▁to ▁determine ▁how ▁strong ▁a ▁man ▁would ▁have ▁to ▁be ▁to ▁trans fix ▁a ▁man ▁with ▁a ▁har po on . ▁ ▁Gr iss om ▁poss esses ▁a ▁Mor i art y - like ▁nem esis , ▁Paul ▁Mill ander , ▁whom ▁he ▁purs ues ▁in ▁several ▁episodes ▁(" P il ot ," ▁" An onymous ," ▁and ▁" Identity ▁Cris is "). ▁Co inc ident ally , ▁" Paul ▁Mill ander " ▁has ▁the ▁same ▁initial s ▁as ▁" Pro f essor ▁Mor i art y ." ▁There ' s ▁also ▁a ▁woman , ▁Lady ▁He ather , ▁in ▁whom ▁he ▁takes ▁an ▁unusual ▁interest . ▁Their ▁relationship ▁is ▁similar ▁to ▁that ▁of ▁I rene ▁Ad ler ▁and ▁Hol mes . ▁Both ▁I rene ▁and ▁Lady ▁He ather ▁en chant ▁Hol mes ▁and ▁Gr iss om ▁with ▁their ▁beauty , ▁their ▁wit ▁and ▁their ▁resolution . ▁Lady ▁He ather ▁often ▁we ars ▁Victor ian - style ▁dress es , ▁referencing ▁Hol mes ' s ▁era ▁(" S la ves ▁of ▁Las ▁Veg