Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Oge: Zodiac gara n'ihu na-agwa ndị ọchịchị okwu maka afọ 1970 fọdụrụnụ site na akwụkwọ ozi na kaadị ekele nye ndị nta akụkọ. N'otu akwụkwọ ozi e biri n'April 20, 1970, Zodiac dere, sị, "Aha m bụ _____", bụ́ nke e ji mkpụrụ akwụkwọ iri na atọ dee. Zodiac gara n'ihu kwuo na ọ bụghị ya kpatara bọmbụ nke ụlọ ọrụ ndị uwe ojii na nso nso a na San Francisco (na-ezo aka na February 18, 1970, ọnwụ nke Sgt. Brian McDonnell ụbọchị abụọ mgbe bọmbụ bọmbụ ahụ na Park Station na Golden Gate Park) ma gbakwụnyere "enwere otuto karịa igbu onye uwe ojii karịa cid [sic] n'ihi na onye uwe ojii nwere ike ịgbapụ azụ. " Akwụkwọ ozi ahụ gụnyere ihe osise nke bọmbụ nke Zodiac kwuru na ya ga-eji gbawaa bọs ụlọ akwụkwọ. N'ala ala nke eserese ahụ, o dere, sị: " = 10, SFPD = 0". Zodiac zigara kaadị ekele nke akara nzipu ozi ya bụ April 28, 1970, na Chronicle. Ihe e dere na kaadị ahụ bụ, "Enwere m olileanya na unu ga-ekpori ndụ mgbe m ga-eme nnyocha ahụ", nke akara Zodiac gbara gburugburu sochiri ya. N'azụ kaadị ahụ, Zodiac yiri egwu na ya ga-eji bọmbụ bọmbụ ahụ mee ihe n'oge na-adịghị anya ọ gwụla ma akwụkwọ akụkọ ahụ bipụtara ihe nile o dere. Ọ chọkwara ịmalite ịhụ ndị mmadụ na-eyi "ụfọdụ bọtịnụ Zodiac mara mma [sic]".N'akwụkwọ ozi nke akara ụbọchị June 26, 1970, Zodiac kwuru na ọ na-ewute ya na ọ hụghị ndị mmadụ na-eyi bọtịnụ Zodiac. O dere, sị, "Egburu m nwoke nọ ọdụ n'ụgbọala a dọwara adọwa égbè.38". O nwere ike ịbụ na Zodiac na-ekwu banyere ogbugbu e gburu Sgt. Richard Radetich, otu izu tupu mgbe ahụ, na June 19. N'elekere 5:25 nke ụtụtụ, Radetich nọ n'ụgbọala ndị uweojii ya na-ede akwụkwọ ịkwụ ụgwọ n'ebe a na-adọba ụgbọala mgbe otu onye na-awakpo ya ji egbe caliber.38 gbapụ ya n'isi. Radetich nwụrụ ka awa 15 gasịrị. SFPD na-agọnarị na Zodiac so n'igbu ọchụ a; ọ ka na-edozighi. Ihe so n'akwụkwọ ozi ahụ bụ ụzọ Phillips 66 nke San Francisco Bay Area. N'ihe oyiyi nke Ugwu Diablo, Zodiac esewo ihe yiri okirikiri yiri nke o tinyere n'akwụkwọ ozi ndị o degaara ya na mbụ. N'elu okirikiri ahụ a tụkọtara ọnụ, o tinyere akara efu, mgbe ahụ akara atọ, isii, na itoolu. Ntụziaka ndị e nyere na ya kwuru na "a ga-agbanwe nọmba ahụ ịbụ Mag. N" Ihe ahụ...  Ajụjụ: Gịnị bụ mbinye aka nke ogbu mmadụ ahụ?
= 12, SFPD = 0.