Aaron Yishmir drops Luke off at the main character's apartment, warning that Sphynx's riddle isn't fully prepared yet and Luke will have to smooth over any bumps or cracks. He throws Luke a jigsaw puzzle that just arrived recently and leaves.
Luke and the MC work on the puzzle, which is large and contains no references, although Luke finds clues on the backs of some puzzle pieces. The puzzle turns out to be a photo of the Prague Astronomical Clock, which reminds the two of promises made in the past to one day travel there together. When the puzzle is complete, they determine their next step is an escape room near an amusement park they used to frequent.