“Fragments” is episode six of season two of Sanctuary.
Henry gets a call from a woman he knows called Rachel. She wants him to feed something called Jack whilst she is away at a conference – Jack sounds like he might be a dog or something. Rachel arrives at her lab whilst still on the phone with Henry and, by the sounds of it, Jack has got out of wherever he was being kept. He doesn’t sound like a dog and would seem to have attacked Rachel.
Henry, Will and Kate arrive at the lab to find it a bit of a mess and Rachel injured and on the floor. Will and Kate go looking for Jack – who is a lizard like Abnormal called a Pleski, or Pleskidara – and Henry stays with Rachel, who is alive but unconscious. The injuries are a concern, because the Pleski can infect people with toxic spores which are totally fatal. Bigfoot arrives with transport to take Rachel back to the Sanctuary, so Magnus can determine whether or not she is infected. The Pleski is also captured comparatively easily, so it’s clear that hunting it down won’t be the focus of the episode. Prior to the police arriving on the scene, Henry scans the lab so he can create a model of the lab back at the Sanctuary.
At the Sanctuary, Magnus determines that Rachel has been infected with the Pleski’s spores, and therefore she will die unless a brand new treatment is devised. Rachel and her team, assisted by Henry – with whom it appears she had a relationship prior to her marriage – had been working with the Pleski for five years and it was believed to be tame. Rachel’s husband, Gerald, was also on the team and Henry appears to be a friend of his as well. He had been doing work on neutralising the spores; the problem is that the treatment of the spores would kill a human. Magnus thinks she may be able to adapt the research though.
Whilst Magnus works on Rachel, Will and Kate try to determine what happened at the lab. The scan that Henry did shows that things didn’t seem to go down the way they would have been expected to, and that something else must have happened. There is something else going on as well, and at least part of that can be figured out well before it is actually revealed.