Jon Manchip White

Dr. Steven Sorenson (Andrews) plans to tap the geothermal energy of the Earth's interior by means of a thermonuclear device detonated deep within the Earth. Despite dire warnings by fellow scientist Ted Rampion (Moore), Dr Sorenson proceeds with the experiment after secretly learning that he is terminally ill. This experiment causes a crack to form and grow within the earth's crust, which threatens to split the earth in two if it is not stopped in time. (imdb)

Deep in Malaya, as World War II is rapidly coming to an end, men, women and children, trapped by the Japanese invasion, are held captive in the Blood Island prison camp. Knowing that Yamamitsu, the sadistic commandant, will murder them all when he learns of his country's defeat, Dutch, a Dutch planter, smashes the camp radio. British officer Lambert and, in the women's prison, the recently-widowed Kate, join Dutch in arming the prisoners (imdb)

Jamaican obi-man hexes student hostel manager, eventually causing the manager's death, before being killed himself by the manager's vengeful spirit. (imdb)

A US spy disguises himself as a German physician to sneak aboard a German submarine located off the South American coast. Once there, he saves a kidnapped scientist and sinks the enemy vessel. (allrovi.com)