Survivors (1975)

S3E10 The Last Laugh

Greg is on a mission to find Dr. Adams, whom he believes is being held against his will. During his search, he’s ambushed by four men who rob him of his notes on the settlements he has explored. Although he manages to escape the attack, he soon faces additional peril upon discovering Dr. Adams, who is suffering from smallpox. Now, Greg must endure the incubation period to determine if he has also contracted the illness.