The Angry Breed (1968)

In Vietnam aspiring actor Johnny Taylor is given a prize film script after saving the life of a Hollywood screenwriter On his return Johnny has trouble finding a studio that will let him play the lead until he saves producer Vance Pattons daughter Diane from a cyclegang attack The grateful father sends him to agent Mori Thompson but Thompson wants the script for gang leader Deek Stacy Deek and his agent feed Johnny LSD and drag him away to the dungeon during the producers Halloween party