Characters
And that also is very convenient, isn't it, Mr. Dufresne?
— Prosecutor • The Shawshank Redemption

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Calling something convenient in a pointed question suggests suspicion rather than praise. The word 'also' implies that this is another detail the speaker finds too helpful to Mr. Dufresne. The line invites doubt while leaving the particular detail unstated.
Context reviewed