IF promises to be the most saccharine movie of the year that may catch some parents unawares but otherwise fails to capture the imagination.

When The Office star John Krasinski made his first foray into blockbuster filmmaking, it was a pleasant surprise to see him abandon what could have been safe comedy fare for a fresh, if a little meat-headed, sci-fi thriller, A Quiet Place.

With IF, the actor-turned-filmmaker, still best known for bemused looks to the camera as Jim Halpert, delivers…