NEW YORK (OSV News) — Two double lives provide the context for some good one-liners in the generally enjoyable espionage comedy "Back in Action" (Netflix). Unfortunately, however, the quality of the humor flags as the film's plot progresses and some of the material viewers encounter along the way makes this production an apt choice for grown-ups only. Opening scenes set 15 years ago introduce us to dating CIA agents Matt (Jamie Foxx) and Emily (Cameron Diaz). Shortly after Emily announces to Matt that she's pregnant, the couple is involved in an operation that goes awry, leading to a plane crash in which they are both presumed dead. Turning this mishap into an opportunity, Matt and Emily decide to drop out…