From the opening strains of Jean Paul Keller’s “Ca S’est Arrange”, you can practically feel Paul Feig donning on a black turtleneck and slipping into auteurship with a mischievous sense of insouciance. He’s in playful mood indeed as he indulges his inner Hitchcock even as he can’t quite resist giving in to his quirky comedic instincts.

When mom-blogger Stephanie (Anna Kendrick) is brought…