[s3e21] Past Imperfect -

Detectives Briscoe and Curtis investigate the murder of a former cover girl with hidden secrets.

Stella Bonasera receives her HIV test results, which come back negative. Other Possible "Past Imperfect" Guides [S3E21] Past Imperfect

Danny and Hawkes investigate the death of Scott Colson at Coney Island. They discover a woman dressed as a cowgirl who used an air gun to inject Scott with a lethal substance, eventually linking the crime to Scott's brother, Jesse. Detectives Briscoe and Curtis investigate the murder of

A woman named Emma is found in a dumpster with her head wrapped in packing tape and her eyelids removed. This M.O. matches Clay Dobson, a serial killer recently released on a technicality. They discover a woman dressed as a cowgirl

In this episode, Mac Taylor pursues a serial killer whose conviction is overturned after the arresting officer is jailed.

The guide for primarily refers to the police procedural drama CSI: NY , which aired on April 25, 2007. CSI: NY: "Past Imperfect" (S3E21)

While not titled "Past Imperfect," this specific season and episode number features the crew meeting their own descendants from a divergent past.