|Director||Jean de Segonzac|
|Original Airdate||November 16, 2006|
"Happenstance" is the eighth episode in the seventh season of CSI: Crime Scene Investigation.
The CSIs investigate the death of two identical twins within a two hour time frame, on opposite sides of town. When the team discovers that the twins knew nothing of each other, they begin to wonder if the two cases are connected, or just a very bizarre coincidence.