"The Railway Children" by E. Nesbit is a children's book published in 1906. When their father is suddenly imprisoned for espionage, three siblings—Roberta, Peter, and Phyllis—move with their mother from London to a modest house near a railway. There, they befriend an elderly gentleman on the morning train and encounter various adventures involving Russian exiles, injured travelers, and railway workers. The children must navigate their changed circumstances while holding onto hope that their father's name will be cleared.