A Prisoner of Morrow is set through a span of ten-week during the Spanish–American War which occurred in 1898. Revolts against Spanish rule had been prevalent for decades in Cuba and were closely watched by Americans. The main issue of the war was Cuban independence from Spain. The war was notable for a series of one-sided American naval and military victories and led to the downfall of Spain as a colonial power. Clif Faraday, a naval cadet, is the main character in this novel. Stationed on a gunboat off the Cuban island as part of the U. S. naval blockade, Clif survives a series of confrontations at sea and treacheries on land. He is captured while on the island during a mission and lands in a Cuban prison called Morro, renowned for its cruelty. Clif receives aid from an unlikely source when all seems lost and survives to show commendable leadership and canny judgment.