Bell, Isaac (Fictitious character) -- Fiction. Private investigators -- Fiction. Coal mines and mining -- Fiction. Action and adventure fiction. Suspense fiction.

Coal mines and mining -- Juvenile fiction Social classes -- Juvenile fiction Survival -- Juvenile fiction Government, Resistance to -- Juvenile fiction Science fiction

Coal mines and mining -- Fiction Women -- England -- Fiction Male friendship -- Fiction Sisters -- Fiction Midlands (England) -- Fiction

Marginality, Social -- Scotland -- Fife -- Fiction Coal mines and mining -- Scotland -- Fife -- Fiction Fife (Scotland) -- Fiction

Working class families -- England -- Fiction. Young men -- England -- Fiction. Mothers and sons -- Fiction. Coal mines and mining -- England -- Fiction.

Coal mines and mining -- Fiction Women -- England -- Fiction Male friendship -- Fiction Sisters -- Fiction Midlands (England) -- Fiction

Coal mines and mining -- Fiction Women -- England -- Fiction Male friendship -- Fiction Sisters -- Fiction Midlands (England) -- Fiction