I SAID. “HE’S the sound mixer.” Joe tapped the virtual keys on his tablet, entering the name. He searched a couple of websites that listed all the crew members from different movies and TV shows. “Nope,” said Joe. “He’s just done sound.” I scratched Mr. Elliott’s name off the list. It was the following day, and neither one of us had any scenes in the movie. But that didn’t stop us from working. This time we played the roles we knew all too well—detectives. We began our investigation with a visit to the production offices, where we grabbed a crew list, and then headed out to the lunch tent. We sat down and began scanning the list for anyone who had experience working in makeup effects, specifically mold making. This method wasn’t foolproof, but it was sure to eliminate most crew members. “Barry Smith,” I said. “He’s the gaffer.” “What’s a gaffer?” Joe asked as he typed in the name. “The person in charge of lighting,” I replied. Joe searched the Internet for Barry’s past screen credits.