[A certain effect is achieved] by a letter, by “old man R”, as the master agent is alone named[…]Thus, when Hitchcock repeats certain names and syllabic or even letteral patterns across his films, they appear to link up in active networks[…]Such repetitions isolate specific signifiers—individual letters or letteral clusters, sounds[…], visual “puns”, and citations—which may operate like monadic and nomadic switchboards whose proliferation continues to alter the afterlife not only of the film texts themselves[…]but the literary or cultural mnemonics that they have become embedded in.