Black Bag seems to aim for what Gone Girl successfully achieved - a suspenseful thriller that, at its core, is really about relationships and marriage. However, it doesn’t quite walk that tightrope as effectively. The way it weaves its dual storylines is clever, but the dialogue often feels dense and overly direct. Or maybe the characters really did hate each other that much.
The film bounces between its two central dynamics, which ultimately affects the pacing. At a certain point,…