'High up in Montmartre, there was a festive atmosphere, people were crowding round the little tables where rose wine was being served ... Yet a hundred metres further on, the little alleyways were deserted, and the killer might find it easy to pounce'

Detective Chief Inspector Maigret is known for his infallible instinct, for getting at the truth no matter how complex the case, but when someone starts killing women on the streets of Montmartre, he finds himself confounded. In the sweltering Paris summer heat, with the city in a state of siege, Maigret hatches a plan to lure the murderer out ...