They also were led into a museum of Cochran""s other oys - Kupfer called Cochran "the all-time genius of the practical joke.While they were involved, Jennifer was found in the alleyway by police, identified as her 47 year-old future self, and brought to her future home in Hilldale.Four other military guards were immediately killed by Jason:Guard # 1""s head was bashed with the swing of a machine gun(# 2 death)Guard # 2 was choked and his body was thrown at and shot by Guard # 3(# 3 death, accidental)Guard # 3""s face was bashed in by a noose pole(# 4 death)and Guard # 4""s neck was strangled by a chain(# 5 death)As Dr.BackgroundJailhouse Rock (1957)is a prison-related, rags-to-riches musical-drama (and biopic parable of a predictable downfall and recovery) from director Richard Thorpe.