<P> When Monday fails to return home, Tuesday retraces her steps . Tuesday learns Monday got the promotion and met Jerry at a bar . Before she can investigate further, C.A.B. agents detain her and cut off her communications . Adrian sees Tuesday being escorted to a cell, where she meets Nicolette Cayman, head of the Bureau and a candidate for parliament . Cayman explains she knows about Tuesday's siblings, and, when Tuesday offers a bribe, Cayman reveals Monday offered the same deal . Cayman orders C.A.B. agents to assassinate Tuesday's sisters . </P> <P> C.A.B. agents use a severed eye to bypass a retinal scanner at the Settman home . Thursday ambushes the agents as they arrest the other siblings . The sisters kill the agents, but Sunday dies . Learning the eye is Tuesday's, the sisters suspect Jerry may have sold them out . The next day, Wednesday leaves without disguising herself and confronts Jerry . He reveals "Karen" got the promotion when she sent millions of euros to Cayman to fund her campaign . After a C.A.B. sniper kills him, Wednesday kills several C.A.B. agents and flees . </P> <P> As the others remotely guide Wednesday to safety, Adrian shows up at the apartment, concerned about "Karen". Thursday convinces Saturday to leave with Adrian, who has had a long - term sexual relationship with one of the sisters . Pretending to be Karen, Saturday has sex with Adrian and covertly links their bracelets, allowing Friday to hack into C.A.B. headquarters . On a video feed, they apparently find Monday in a holding cell . Meanwhile, C.A.B. agents corner and kill Wednesday . After Adrian leaves his apartment, C.A.B. agents kill Saturday as she tells them Monday was dating Adrian . Reasoning that she cannot survive on her own, Friday sacrifices herself to give Thursday a chance to rescue Monday when C.A.B. agents again storm the sisters' apartment . </P> <P> Adrian hears about the incident and rushes to the apartment . Thursday takes him hostage and blames him for her sisters' deaths . He is at first confused but claims to love Monday after realizing they are siblings . Thursday convinces Adrian to help by telling him Monday is still alive . Adrian sneaks Thursday into C.A.B. headquarters in a body bag . As she is prepared for disposal, a child undergoes cryosleep . Instead of being frozen, she is incinerated, which Thursday records . After overpowering the guards, Adrian and Thursday proceed to rescue Monday . However when they reach her cell, they learn that it's actually Tuesday . They deduce that it is Monday who has sold them out to Cayman . </P>

Who plays the girl in what happened to monday