coup de main - noun
kü-də-ˈmaⁿ
Definition of coup de main : an attack that achieves complete surprise.

Behind-the-scenes of 'Call Me By Your Name'.

It's your lucky day, because a whole lot of behind-the-scenes photos from the filming of 'Call Me By Your Name' have been released, featuring the film's leads Timothée Chalamet and Armie Hammer, and director Luca Guadagnino.