Arty Homebrook lived and died in a world of sleaze which stretched from Chicago to Paris but never beyond the gutter. He'd been sleeping with Madame Fulton, which is why Harry Fulton promised to kill him. So far as the Paris Police are concerned it's an open and shut case. Harry's father has other ideas and hires Salazar to investigate.
A Dead American in Paris places Salazar in the midst of an unpleasant underworld of infidelity, blackmail, backstreet abortions and murder. It's enough to make you want to chuck it all in and take a job cleaning out the sewers. But Salazar is far too inquisitive to walk away and far too stubborn to know what's for the best. So he wakes up each hungover morning, blinks into the sunlight, and presses on until it's his life on the line. Then he presses on some more, just for the hell of it.