Harriet Hewston

Doctor Hewston was an Atlantis Expedition member, part of the science team under Rodney McKay to explore the city for Ancient devices.

She was once working with a colleague, James Watson when they both activated an Ancient device. The second they realised it was emitting, they deactivated it and reported to Carson Beckett, where he found nothing life threatening on them. However, she didn't realise that a tumour was being developed behind her lung. The next morning, she went on a sparring session with Teyla Emmagan, and later planned a late lunch. When Teyla came to get her Bantos sticks, the tumour went into a critical mass and Hewston exploded, killing her instantly.