The Departed works well for learners who already understand English comfortably and want more challenging listening practice. The language mixes everyday English with a few expressions that need attention, so it works best for learners who already have a solid base. The narrative adds extra difficulty because learners need to track events, motives, or character relationships. At an average of around 98 words per minute, the dialogue is generally manageable, though some exchanges require more attention. For learners around B2/C1, this can be a practical choice for building confidence with more complex narratives.