Colin Lamb, who walks around in the guise of a marine biologist, is paying a visit to Wilbraham Crescent when Miss Sheila Webb runs screaming out of a house straight into his arms. She tells him there is a corpse inside the house. When he goes in to check, her hysteric tale is confirmed. There is a dead body in the house and what is more mysterious is that four clocks in the room are frozen at 4:13 even though the actual time is 3:13. The house turns out be the residence of an elderly blind lady, Mrs. Pebmarsh. To the astonishment and consternation of everyone involved, she states she did not call the Cavendish Secretarial Bureau to specifically inquire for the typing services of Sheila Webb. Is Miss Webb the target of a conspiracy or is she actually hiding something?
When Colin Lamb gets Hercule Poirot, the famous Belgian detective concocted by the queen of crime writing, involved in the case from his armchair no less, he enquires as to why Colin was found at Wilberham Crescent. Apparently he was investigating another case that pointed him towards this address. Unfortunately here the main role doesn’t fall to the detective but when murder rate spikes higher, Poirot uses his grey cells to figure out this case doesn’t follow the one plot but two which intertwine with each other.
As the mystery unravels, you finally figure out the motive for the murder of that unidentified man, why the girl with broken high heel was prevented from giving evidence, the significance of 4:13 and who is committing treason by passing information to the enemy. This one is littered with red herrings so it is almost impossible to figure the case out by reasoning.
Below is the television adaptation based on the novel. Please note the story is mostly true to type but there are some modifications made such as the time in which it was set.