[1] Joseph Losey directed a sequel, Roads to the South (French: Les Routes du Sud-1978).

[2] In the aftermath of the Spanish Civil War, communist veteran Diego has dedicated his life to continuing the struggle against the Francoist State while he lives in exile in Paris.

After meeting Nadine by using her father's passport, Diego learns that she is involved with an alternative extremist group that is planning an armed attack in Spain.

When he meets the young extremists who will execute the plan, he tries to persuade them to abandon the action as misconceived, but they ignore him.

The leaders of the underground send Diego on a mission to Barcelona along with a new recruit, perhaps as a way of getting rid of him as the police have since discovered his identity.