Mix Cellini is superstitious about the number thirteen, and he is obsessed with 10 Rillington Place, where the notorious John Christie once committed a series of foul murders. He is also infatuated with a beautiful model who lives nearby, who would not look at him twice, while his landlady, Gwendolen Chawcer, is equally reclusive, living her life through her library. Both landlady and lodger inhabit weird worlds of their own, but when reality intrudes into Mix's life, a long pent-up violence explodes.
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