Concert thief empties bag

Lisa was rocking out to a concert when her clutch bag was stolen. She had been dancing along to the music with her small bag on the floor between her feet. Halfway through the concert, she reached down for it and realised it was missing. Lisa tried to find it but the venue was so full and dark that nobody had seen anything. She reported the theft to police and called her travel insurer who covered the cost of replacing her belongings.