When Olivia Benson (Mariska Hargitay ) and Elliot Stabler (Christopher Meloni ) update the Captain that Mrs. Bryce was not the victim's mother, you can see Chris Meloni's microphone attached to his pants and the wire running up his back.
While interviewing Kyle Hubert, the camera follows Kyle to a mirror. You can see the camera reflected in the mirror on Olivia's (Mariska Hargitay ) left.
In Kyle Hubert's office at 25:30-25:38, the boom mic is reflected in the photo.