Choir director Kathy Blair's son discovers her murdered at home; detectives find camera footage containing a shadowy figure that might just be their killer; the murder of a couple nearby sparks fears this might be the work of a serial killer.

On Valentine's Day, Police discover Demetrius Graves fatally stabbed on the street. Two Days later, Bonnie Ross turns up dead at home. A trail of CCTV evidence uncovers that these two very different people share one fateful connection.