The story concerns two agents, one Mexican (PJF) and one American, who are tasked to stop the smuggling of Mexican migrant workers across the border...
Travellers board a flight, unaware that other passengers might be spies and counterspies, complete with secret documents, poison and elaborate plans...
El Puma, a Mexican desert guide, escorts an archaeological expedition headed by Professor Lucius Lloyd through the Indian badlands of Mexico. Marian,...
