Don't have nightmares

I just walked past a ten-year-old kid in the street. As I did so, he pointed at me and hissed to his sister, "I've seen him on Crimewatch!"

I have never appeared on Crimewatch, in either a "Have you seen this man?" or a "Viewers may find this reconstruction disturbing" capacity. Should I be concerned? Do I have an evil twin, and what has he been up to?