Dredd's partner, an anxious rookie named Cassandra, doesn't wear a helmet, since it would scramble her psychic powers, so she is played visibly, as well as audibly, by Olivia Thirlby, who succeeds in investing an action figure with affecting fear, impressive courage and a commitment to justice that serves as Cassandra's compass.
WSJ: Dredd 3D | How to Survive a Plague | End of Watch | Trouble With the Curve | Vivid Dredd 3D Makes Rival Thrillers Look Flat | Film Reviews by Joe Morgenstern