Celtic Tetralogy
1 The Golden Strangers (1956)
aka The Invaders
2 The Dark Island (1952)
3 Red Queen, White Queen (1958)
aka The Pagan Queen
4 The Great Captains (1956)
aka The Invaders
2 The Dark Island (1952)
3 Red Queen, White Queen (1958)
aka The Pagan Queen
4 The Great Captains (1956)
