Pubblicato in Italia con il titolo Caffé nero. Poirot investiga un omicidio e la sparizione di una formula chimica nella prima opera di Agatha Christie scritta per il teatro.

Hercule Poirot is called to a country house to retrieve the formula for a new atomic explosive, but when he arrives, accompanied by the loyal Hastings, he is too late. Sir Claud Armory, the scientist who created the formula and who asked for Poirot’s help, is dead and the formula seems to have been stolen. The list of suspects are his family and guests staying at the house: his penniless son Richard, his fidgety daughter-in-law Lucia, his chatty sister Caroline, his flirty niece Barbara, his efficient secretary Edward, and Lucia’s old friend, Dr. Carelli, although she doesn’t seem happy with his staying.

Black Coffee is the first play written by Agatha Christie and it premiered on stage in December 1930 launching her career as a playwright. The script was then turned into a novel by Charles Osborn and published in 1998. It is captivating and intriguing and I had fun reading it!