Doorbell camera captures clown-costumed 15-year-old accused in downstate Illinois murderA doorbell camera captured footage of a teen who police say killed someone while wearing a clown costume. A doorbell camera captured footage of a teen who police say killed someone while wearing a clown costume. A doorbell camera captured footage of a teen who police say killed someone while wearing a clown costume. A doorbell camera captured footage of a teen who police say killed someone while wearing a clown costume. EAST ST. LOUIS, Ill. (WLS) -- A doorbell camera captured footage of a teen who police say killed someone while wearing a clown costume.