Leonard Di Caprio azagira uruhare runini muri firime "Icyumba Cyuzuye" gishingiye kubintu nyabyo. Umukinnyi azerekana ishusho ya Billy Milligan kuri ecran - umunyabyaha wa mbere yari afite ishingiro mugihe cyiburanisha kubera kwisuzumisha "imiterere yagabanijwe".
Ishusho ishingiye kuri documentaire z'Abaroma Danili Kiza "ibiti byinshi binini binini binini", byasohotse mu 1981. Bavuga di caprio barose kwiyerekana iki gitabo imyaka irenga makumyabiri. Noneho, amaherezo, yafashe umushinga. Usibye ko Leonardo azagira uruhare runini, azanasohoka kwa Producer wa firime. Jason Syirevich ("Umubare wishimye wumucakara") na Todd Katzberg, wakoranye nubunyangamugayo hejuru ya murukurikirane "yashimuswe" yafashe kumenyera.
Billy Miligan yakiriye icyamamare mu mpera z'imyaka ya za 70, igihe yashinjwaga abajura benshi ndetse no gufata ku ngufu. Icyakora, abamwunganira batangaje ko abakiriya be babasanitse, bavuga ko abantu babiri bayo baho bakoreye ibyo byaha batabizi miligan. Kubera iyo mpamvu, umunyabyaha yagizwe umwere, ariko yoherejwe mu buvuzi bwo mu mutwe.
Guhindura-imiterere muri billy yagaragaye afite imyaka itatu cyangwa ine. Kumyaka umunani n'icyenda, umubare wabantu wiyongereye. Mubukure, Miligan yari afite abantu 24 bahuriye hamwe, icumi muri bo bakaba nyamukuru. Yarekuwe mu 1988 nyuma yimyaka icumi yo kuvurwa cyane. Kugeza mu 1996 yabaga muri Californiya, nyuma yuko ibimenyetso bye byatakaye. Ukuboza 2014, byamenyekanye ko Billy Miligan yapfuye afite imyaka 59 mu gihugu cyita ku bageze mu za bukuru i Ohio.