Border Patrol Agent Jagger must thwart Communist agents who are trying to force a naturalized American citizen to return to his home county with his inventions by threatening to harm the old man's family.
Jagger is sent to San Diego to break up a drug-smuggling gang operating along the Mexican border. He traces the narcotics to the criminals' headquarters - an innocent-looking bowling alley.
A South American refugee living in Cape Cod is working on his autobiography when two assassins from his old country kidnap his son and demand the man turn over the manuscript for his book in exchange for the boy's life.
In New Orleans Jagger investigates a boat service that charters fishing trips which may be connected to a gang smuggling illegal aliens from South America.
