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

Halsey plays herself in 'A Star Is Born' remake.

After reports circulated that Halsey had landed herself a small role in the Bradley Cooper-directed 'A Star Is Born' remake, Miss Ashley Nicolette Frangipane has now officially confirmed that she indeed has a cameo in the upcoming film, playing herself.