▁on ▁to ▁write ▁The ▁Or ion ▁Myst ery ▁together , ▁which ▁became ▁an ▁international ▁best s eller . ▁ ▁BBC ▁Two ▁broadcast ▁a ▁document ary ▁on ▁Bau val ' s ▁ideas ▁around ▁the ▁time ▁of ▁the ▁book ' s ▁publication . ▁He ▁has ▁co - author ed ▁three ▁books ▁with ▁Graham ▁Han cock , ▁including ▁ 2 0 0 4 ' s ▁T alis man : ▁Sac red ▁C ities , ▁Secret ▁Fa ith ▁ ▁in ▁which ▁the ▁two ▁put ▁forward ▁what ▁soci ologist ▁of ▁religion ▁David ▁V . ▁Bar rett in ▁a ▁review ▁in ▁The ▁Independent ▁described ▁T alis man ▁as ▁a ▁fact ually ▁incorrect ▁and ▁un con vin cing ▁" mess ▁of ▁a ▁book " ▁based ▁upon ▁ind isc rim inate ▁use ▁of ▁source ▁material ▁cul min ating ▁by ▁" prom ul g ating ▁a ▁version ▁of ▁the ▁old ▁Jewish - M ason ic ▁plot ▁so ▁bel oved ▁by ▁ult ra - right - wing ▁consp i racy ▁the or ists . ▁ ▁Or ion ▁Cor relation ▁Theory ▁Bau val ▁is ▁specifically ▁known ▁for ▁the ▁Or ion ▁Cor relation ▁Theory ▁( O CT ), ▁which ▁propos es ▁a ▁relationship ▁between ▁the ▁fourth ▁dynast y ▁Egypt ian ▁py ram ids ▁of ▁the ▁G iza ▁Pl ate au ▁and ▁the ▁alignment ▁of ▁certain ▁stars ▁in ▁the ▁const ell ation ▁of ▁Or ion . ▁However , ▁ 2 0 ▁years ▁before ▁Bau val ' s ▁book ▁The ▁Or ion ▁Myst ery ▁suggested ▁that ▁the ▁G iza ▁Py ram ids ▁were ▁aligned ▁to ▁Or ion