Our Mutual Friend, written in 1864–1865, is the last novel completed by Charles Dickens and is one of his most sophisticated works, combining savage satire with social analysis. It centres on, in the words of critic J. Hillis Miller, quoting the book's character Bella Wilfer, "money, money, money, and what money can make of life".

The Staplehurst rail crash was a derailment at Staplehurst, Kent, on 9 June 1865 at 3:13 pm. The South Eastern Railway Folkestone to London boat train derailed while crossing a viaduct where a length of track had been removed during engineering works, killing ten passengers and injuring forty. In the Board of Trade report it was found that a man had been placed with a red flag 554 yards (507 m) away but the regulations required him to be 1,000 yards (910 m) away and the train had insufficient time to stop.