u/MatoiMamaMia

This has been bugging me for YEARS and I was hoping someone might know what I'm talking about... there was an episode of a murder mystery show where there was a mystery killer. I remember he had killed someone in the house and the only way they found out was... either he was riding a bike outside to leave or someone else was riding a bike outside and saw him leave. does anyone know what the hell I'm talking about???