Oh Mercy!

Oh Mercy! (Roubaix, une lumière) is a 2019 French crime drama film directed by Arnaud Desplechin. The film was inspired by the 2008 TV documentary Roubaix, commissariat central, directed by Mosco Boucault. It stars Roschdy Zem, Léa Seydoux, Sara Forestier and Antoine Reinartz. It was selected to compete for the Palme d'Or at the 2019 Cannes Film Festival.

Plot
One Christmas night in Roubaix, Daoud, the local police chief, and Louis, a fresh recruit, are confronted with the violent murder of an elderly woman. The neighbours of the victim, two young women, Claude and Marie, are arrested.

Reception
On review aggregator website Rotten Tomatoes, the film holds an approval rating of 56% based on 9 reviews, with an average rating of 4.35/10. On Metacritic, the film has a weighted average score of 45 out of 100, based on 7 critics, indicating "mixed or average reviews".