I blurted out the "Sage stole the ring" thing before I had a chance to actually look at the callsheet. So, it was probably wrong.
If Chuck has it, then he either took it back somewhere in 604 (but why?), CB have a fight at the top of 6x05 and B gives him back the ring (seems odd for an episode opener), something else that I haven't thought of...
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6x05 - "MONSTROUS BALL"
COLD OPEN
[Day 1]
? - EXT Restaurant – Steven & Lily talk over lunch (Lily, Steven)
8 – EXT Steven’s Apt – Blair approaches Sage who is carrying her cotillion dress (Blair, Sage)
ACT 1
? - EXT Street – Lily exits store; Chuck approaches and talks to her [
She starts to go, Chuck stops her. Chuck: Lily, please, I need your help Lily: Last time I tried to help you, you manipulated me against your father. Bart's asked me not to speak with you until you stop undermining our relationship.] Lily exits; Ivy who was stalking in a cab gets out and approaches Chuck; they speak briefly, he looks annoyed and walks away (Chuck, Lily, Ivy)
ACT 2
20pt – EXT Shop – probably on the phone (Steven)
ACT 3
[Night 1]
21- INT Cotillion Coat Check Corridor - (Dan, Georgina, Sage) *Opens Act 3*
22pt – INT Cotillion – Dan brings Blair a drink, they talk, Chuck arrives. (Blair, Dan, Chuck) *Blair’s necklace w/ Chuck’s ring is a prop!*
22pt – INT Cotillion - Clear Blair POV on Serena entering cotillion – (Blair)
23 – INT Cotillion Foyer Bar – (Serena, Lily)
24 – INT Cotillion - Sage tells Blair she has a new secret plan; backstage supplies; debs hand in flashdrives; escort’s “joint” (Blair, Sage, Committee chairperson, Bunny Raburn)
25 – INT Cotillion Foyer Bar (Chuck, Lily, Bart)
ACT 4
26 – INT Cotillion Foyer Bar - (Chuck, Lily, Bart)
27pt1 – INT Cotillion – Scene 27pt1, 28pts – Chairperson announces, presentation/mayhem & begin dance (Nate, Sage, chairperson, Bunny)
27pt2 – INT Cotillion Coat Check Corridor - (Serena, Blair)
28pts – INT Cotillion – mayhem cont.(Blair, Dan, Nate, Georgina, Sage, Bunny, #30)
28pts – INT Cotillion – (Serena, Nate, Steven, Sage, chairperson, Bunny)
29pt – INT Cotillion – mayhem cont. (Serena, Steven, chairperson)
30 – INT Cotillion – (Blair, Dan, Georgina, #30)
31 – INT Cotillion - Nate realizes Sage’s deceit and leaves; Sage gives Georgina back her cellphone (Nate, Georgina, Steven, Sage)
33- INT Cotillion Coat Check Corridor – (Serena, Blair) *Ends Act 4*
ACT 5
36pt – INT Cotliion Empty Ballroom - Serena is shut down by a phone call with Steven, but Dan is a good listener (Serena, Dan)
? - INT Restaurant (night) – Dan and Serena are having drinks together; Cotillion girl walks over and hands Dan a piece of paper; Serena snatches it away
? - EXT Restaurant (night) – Serena exits the restaurant