Series 4

In April 1879, Liverpudlian merchant James Maybrick is poisoned with arsenic. His wife Florence is found guilty but did she get a fair trial?

Evelyn Foster stops to pick up a man who's missed his last bus, but the part of the good Samaritan ends badly for her as she is killed.

With husband Percy away, Frederick Bywaters romances wife Edith Thompson. In 1922, Bywaters stabs Percy to death and both are hanged.

Having bought his title, Prince Ali Fahmy Bey falls for sex worker Marguerite, and marries her, the marriage is a disaster, and ends in murder.

Dr Robert Clements married three times for money. In 1940, he took a fourth bride but she, too, soon becomes ill.

In the winter of 1863, poverty is rife, soon after taking out an insurance policy on her mother Mary, Alice Hewitt stands accused of murdering her mother by arsenic poisoning.

Gangland boss Jim Colosimo is obsessed with singer Dale Winter so hires Johnny Torrio and Al Capone to deal with business.

In Edwardian Lancaster, the bodies of a respected family were exhumed, having died within one year of each other. Murder was suspected.

In June 1934, the body of Violet Kaye is found in a trunk, in Brighton. Kaye was in a violent relationship with drunk Tony Mancini.

Weldon Atherstone believes that his beau Elizabeth has been seeing his own son Thomas behind his back, when he aims to challenge the pair, tragedy strikes.

346 men who were shot at dawn during the Great War. James Crozier joined up at sixteen but suffering from shell shock he deserted.

Privates Wild and Crimmins go out drinking on the eve of the Battle of Somme, missing roll call and the battle the next morning.