Squire William Corder, (Tod Slaughter) wins the affection of Maria Marten, (Sophie Stewart), but their happiness is cut short when she falls pregnant and demands that Corder marry her. At first he agrees, but his wicked mind is planning her murder in the 'Red Barn'. When Maria turns up for their secret assignment she is murdered and buried beneath the barn floor. Squire Corder then departs for London, supposedly eloping with Maria Marten for a new life. But will Maria's rotting corpse stay hidden within the Red Barn? Maria Marten is based on the grisly, true story of her murder in 1827 by William Corder. His scalp is still displayed in Bury St Edmunds.