▁de alt ▁dru gs ▁in ▁North port ▁as ▁well . ▁▁ ▁K asso ▁d ab bled ▁in ▁the ▁occ ult ▁and ▁Sat an ism ▁and ▁was ▁acquaint ed ▁with ▁the ▁members ▁of ▁a ▁lo os ely ▁organized ▁group ▁of ▁friends ▁who ▁sold ▁mar iju ana ▁and ▁referred ▁to ▁themselves ▁as ▁the ▁" K n ights ▁of ▁the ▁Black ▁Circle ". ▁After ▁K asso ' s ▁murder ▁of ▁Lau wers , ▁several ▁newsp apers ▁and ▁television ▁journal ists ▁incorrectly ▁reported ▁the ▁Kn ights ▁as ▁being ▁a ▁" S atan ic ▁cult ." ▁K asso ▁alleg edly ▁participated ▁in ▁occ ult ▁cer emon ies , ▁mostly ▁in ▁North port , ▁and ▁celebrated ▁Wal p urg is ▁Night ▁at ▁the ▁inf am ous ▁Am ity ville ▁Hor ror ▁house ▁in ▁ 1 9 8 4 . ▁K asso ▁also ▁expressed ▁to ▁friends ▁his ▁interest ▁in ▁Anton ▁La V ey ' s ▁book ▁The ▁Sat an ic ▁Bible . ▁On ▁at ▁least ▁one ▁occasion , ▁R icky ' s ▁parents ▁admitted ▁him ▁to ▁the ▁South ▁O aks ▁Psych iat ric ▁Hospital ▁( former ly ▁known ▁as ▁the ▁Am ity ville ▁As yl um ) ▁in ▁Am ity ville , ▁New ▁York ▁for ▁drug ▁re h abil itation ▁and ▁psych iat ric ▁care . ▁ ▁In ▁the ▁year ▁prior ▁to ▁the ▁murder , ▁K asso ▁had ▁been ▁arrested ▁for ▁dig ging ▁into ▁a ▁colonial - era ▁grave ▁inside ▁a ▁local ▁c emetery . ▁Less ▁than ▁a ▁month ▁after ▁his ▁arrest ▁for ▁this ▁crime , ▁R icky ▁contract ed