[s13e10] Risky Business Class Instant

is an episode of the long-running police procedural CSI: Crime Scene Investigation , originally aired on December 12, 2012.

Jeffrey had been siphoning millions from Helen's accounts. To cover his tracks, he replaced Helen with an impostor—his sister, Marcia—and sent a private investigator who had uncovered the fraud onto the ill-fated Chicago-bound flight. He sabotaged the plane to kill the investigator and destroy evidence. Character Arc: Sara’s Relationship Strain [S13E10] Risky Business Class

The episode features a dual narrative focusing on a tragic aviation disaster and the personal relationship strain between Sara Sidle and her husband, Gil Grissom. is an episode of the long-running police procedural

The investigation is complicated for when she must collaborate with Doug Wilson , an investigator from the NTSB and a former lover from her time in San Francisco. He sabotaged the plane to kill the investigator

Five people are killed in the accident. Because the aircraft was a private charter with no manifest, the CSI team’s first challenge is identifying the victims.