Agatha Christie's The Big Four enjoyed commercial success at the time of its publication in 1927, despite lukewarm critical reviews. Deviating from her earlier writing style, Christie presents several smaller mysteries within a larger one. Renowned private detective Hercule Poirot, pulled into a world of intrigue and espionage, sets out to break up an international group of four criminal masterminds. In this follow-up to The Murder of Roger Ackroyd, Christie has crafted an action-packed plot filled with colorful characters whose aim is world domination. The offbeat novel takes readers on a fast-paced thrill ride from England and France to Belgium and Italy.