05.06 Episode 94
Airdate: August 3, 2001

Cassandra was 12 years old when she became the only survivor of her home planet of Hanka, and was adopted by Dr. Fraiser. Now turning 16, she suddenly begins experiencing seizures and a high fever, and generating a low-level electromagnetic field resulting in telekinesis. The symptoms are similar to those experienced by other children her age on Hanka, and her condition is attributed to a retrovirus which remains dormant for years before manifesting itself. Children on Hanka would go into the forest and return cured, and SG-1 travels to Hanka in an attempt to find a cure for her condition.

On Hanka, SG-1 finds Nirrti's underground lab. Here the sick children had been drawn as part of her experiment, to be cured in a kind of initiation rite. Her experiments were designed to engineer a new host for herself by altering the DNA of successive generations of children, thus manipulating the evolution of an advanced human, known as "hok'tar". She had destroyed the population of Hanka to hide her scheme, but now she has returned to follow through on her experiment. As SG-1 explores the evidence within Nirrti's lab, the mysterious activation of the transporter rings suggests an invisible presence.

At the SGC, Cassandra's condition continues to deteriorate. Her fever and telekinesis cannot be controlled, and she is slipping out of consciousness. Using her invisibility device, Nirrti has been able to return undetected through the stargate with SG-1, but her presence is discovered as she tries to approach Cassandra. In a search of the base, Nirrti is apprehended, but SG-1 must face the moral dilemma of negotiating for Cassandra's life. Nirrti agrees to perform the rite to cure Cassandra, and in return she is granted her freedom to leave through the gate, where she will continue her experiments once again.

Written by: Heather E. Ash
Directed by: Peter DeLuise

Guest Starring: Colleen Rennison as Cassandra, Jacqueline Samuda as Nirrti, Teryl Rothery as Dr. Fraiser, Richard de Klerk as Dominic, Karen van Blankenstein as Nurse

Reference: Cassandra, Janet Fraiser, Hanka, Healing Device, Hok'tar, Invisibility, Nirrti, Nurse, SF Guard, Tablet and PTD, TER


Nirrti's Lab on Hanka