We open with the crime, a woman walking down an alley looking for a party, when a body falls off the roof in front of her. At the same time Catherine’s providing a non-sequiter voice over about lines and being a detective, rules, protocol, good guys and bad guys. Don’t pay much attention, it’s not actually relevant to anything that follows.
At Catherine’s home, she’s joined with her little sister, Heather, who is living with her now. But she’s a little disturbed by the big box of “files about our mother’s death” Catherine keeps lying around – and the murder board. She wants Catherine to move on, perhaps let go, especially when she starst questioning Heather about how their mother was acting before she died. Catherine’s distracted from the “let it go speech” by one of her mother’s research documents.
To the beast warehouse, breaking through the fence, she enters the warehouse and is attacked by JT. There’s a brief altercation that JT easily loses, but he still has a rant – they’ve managed to stay off the grid for 9 years and now she keeps drawing attention to them – she needs to leave them alone. She gives him her mother’s research, says it’s about DNA but her mother was a doctor for infectious diseases, it could be related to Muirfield. She then gets a call – much to JT’s dismay that she brought a mobile phone into their hide out – about the crime scene.
To the dead body for some flirting with Evan, the pathologist after which Tess urges them to just do it already and get done with it – though Catherine doesn’t want to be another notch on Evan’s belt and mocks Tess back for her “men cleanse”. Meet up with and snark with Joe, their boss and see the victim – Gemma, a ballerina, 22 who works for the ballet company that is run out of the building she fell from. They’re interrupted by Victoria Hanson who runs in crying about Gemma – she’s a friend and an understudy for her. Since she fell of a big building Catherine and Tess have to ask her how she was feeling, any change of demeanour and Victoria says Gemma was stressed – she’s dancing as Odette in Swan Lake and was struggling with it.
Evan, meanwhile, believes Gemma has defensive injuries and she fell too far into the street – so probably not an accident. Tess and Catherine go to sweep the building, finding the theatre and a room where the music is still playing where Gemma was practicing. Catherine separates from Tess to go to the roof – with a huge number of cigarettes stubbed out – and is grabbed by Vincent who is irritated by her dropping in on his warehouse. He says her mother’s research is for curing a fever and has nothing to do with Muirfield. He tells her he only told her that the killers were tracking her mother so Catherine would stop blaming herself, not for her to go investigate them. It’s too dangerous to be involved with Muirfield. To which Catherine responds with “aha! Muirfield had something to do with my mother’s death!” Uh-huh, selective hearing at its best. Before leaving he tells her that his super-duper-senses noticed Victoria was lying.
Back to Evan (more flirting) where he finds that the cut in Gemma’s scalp matches a hair pin but not the one they found (no blood on it). They also found that while she was on the roof where people gathered to smoke, Gemma wasn’t a smoker. And there was powder on hands that could be make up. Tess and Catherine think this points to another woman and, after some research, find that understudy Victoria played Odette in last year’s production – it looks like she was demoted.
Off to the theatre where they notice Victoria is Odette again. They talk to Bertrand, the artistic director who tells them money’s far too tight for them to cancel the performance. He also rejects that Victoria and Gemma were competitive, they were like sisters – and Victoria wasn’t demoted. She left for a year with a broken toe, when she’s fully recovered, she would go back to being Odette, everyone knew that Gemma was only a temporary replacement. They check Gemma’s locker and find it completely empty – when it’s normally over flowing. They also find fresh flowers in the bin – tess points out the only time she throws away fresh flowers is when they’re from someone she doesn’t like. Touching the flowers, they get powder on their hands – lily pollen. Which flirty Evan confirms is what’s on Gemma’s fingers – and that she has the morning after pill in her system.
Catherine’s next step is obvious to the top secret warehouse where she has been told not to go! She lurks outside until Vincent hears her and invites her in. She promises she’s here about the case not her mother. They discuss the case briefly but Vincent has nothing to add – and she quickly gets to her mother, how the obsession consumes her and how she looks at old photographs of herself and she doesn’t even recognise herself any more. JT drops in to tell Vincent how risky this is, how she puts them at risk and also how Vincent’s last relationship apparently went south. He brushes Jt off and returns to Catherine with his own photo – of him and the fellow soldiers in the Muirfield programme, and how he barely recognises them either. He discusses the men in the picture who are all dead and she decides with her police resources she can investigate, she can expose Muirfield and shut them down, she can get justice for the victims! Vincent tells her Muirfield monitors everything and would just destroy her – and as for her mother’s case, all he knows is the men who killed her were from Muirfield, now leave it alone and go.