On the fourth floor of the grand house, Lyra finds seven locked doors and a clock showing almost five o’clock. She and Gigi each begin testing their keys on the ornate bronze locks, and Lyra’s key opens the third door she tries.

Inside, Lyra discovers an almost bare room containing only a king-sized bed with a ball gown laid across it. Remembering the instruction to don a costume and mask before the ball begins at quarter past, Lyra lifts the gown and finds a delicate jeweled masquerade mask beneath it.

Lyra is briefly captivated by the beauty of the dress and mask, though she reminds herself that the Grandest Game is a competition, not a fairy tale. She changes into the gown, which fits perfectly and shifts in waves of blue to white, making Lyra feel as though she is wearing a waterfall.

In the attached bathroom, Lyra studies her transformed reflection, puts on ballet flats found in one vanity drawer, and discovers glass dice in another. When Lyra picks up the dice, the mirror displays her identity as Player Number 4, Lyra Kane, then changes to the message: GAME ON. Lyra puts on the mask, fully entering the next phase of the game.