Susie Chang was the senior criminalist of the Boston Police Department's crime laboratory.
In "Class Action Satisfaction", it was revealed that she was dating a morgue technician, Alex Simmons, whom she met at a nudist retreat. They had been keeping it a secret but revealed it to Dr. Maura Isles anyway, saying that there seemed to be no policies against coworkers dating.
She has described herself as having a very physical memory; when circumstances required her to take point in an investigation, she made various dioramas to explain her reasoning. (Knockout).
Chang was killed in "Misconduct Game" by a blow to the head after she had left a crime scene. During the investigation, it was revealed that Chang's death was part of a complex plan to frame the forensics department for poor handling of a recent case, but the subsequent investigation exposed the killer's true agenda.
- She graduated from an art school as revealed in "Imitation Game".
- She admitted that Dr. Maura Isles was one of her heroes.