ayer , ▁directed ▁by ▁David ▁Miller , ▁and ▁produced ▁by ▁Ed win ▁H . ▁Kn opf ▁from ▁a ▁screen play ▁by ▁Christopher ▁I sh er wood ▁based ▁on ▁a ▁story ▁by ▁John ▁Er sk ine . ▁The ▁music ▁score ▁was ▁composed ▁by ▁Mik l ós ▁R ó z sa , ▁and ▁Robert ▁H . ▁Plan ck ▁was ▁the ▁cinemat ograph er , ▁who ▁fil med ▁in ▁Cinema Scope ▁and ▁East man color . ▁The ▁exception ally ▁lav ish ▁cost umes ▁were ▁designed ▁by ▁Walter ▁Pl unk ett . ▁ ▁The ▁film ▁stars ▁L ana ▁Turner , ▁Pedro ▁Arm end á riz , ▁Roger ▁Moore , ▁and ▁Mar isa ▁Pav an , ▁and ▁features ▁Sir ▁C ed ric ▁Hard w ic ke , ▁Tor in ▁Th atch er , ▁T ain a ▁El g , ▁John ▁Lu pton , ▁Henry ▁D ani ell , ▁Mel ville ▁Cooper ▁and ▁an ▁early ▁film ▁appearance ▁by ▁Stuart ▁Whit man . ▁It ▁was ▁Turner ' s ▁last ▁film ▁under ▁her ▁long time ▁M GM ▁contract ▁and ▁thus ▁marked ▁another ▁stage ▁in ▁the ▁decl ine ▁of ▁the ▁studio ▁star ▁system . ▁ ▁Plot ▁The ▁action ▁is ▁set ▁in ▁ 1 6 th - century ▁France . ▁ ▁D iane ▁de ▁Po it iers ▁( L ana ▁Turner ) ▁becomes ▁the ▁mist ress ▁of ▁Prince ▁Henri ▁( R og er ▁Moore ), ▁second ▁in ▁line ▁to ▁the ▁throne . ▁Their ▁l ia ison ▁continues ▁through ▁Henri ' s ▁arranged ▁marriage ▁to ▁the ▁Italian ▁Catherine ▁de ' ▁Med ici ▁( Mar