Patchwork Promenade is leaking a secret. A cracked stamped brick coughs up a rolled time-capsule note and six kids have less than a day to follow a three-zone puzzle trail before the neighborhood’s big celebration sweeps the last clue away. From the bakery’s warm fogged window to the mural-streaked corridor of Gasket Alley, across the rooftop sproutery and through Grout & Glue Makerspace, every tile, stamp, and mailbox hides a hint — if you know how to look. Nico, paint-splattered and impossibly observant, reads murals like maps. Asha, grease-stained and always building, turns scavenged scrap into the exact gadget the plan needs. Together with four other neighbors — a map-loving librarian’s kid, a quiet code-cracker, an errand-running courier, and a deaf skater whose silence speaks in gestures — they race the clock, trading strengths, jokes, and a few near-misses. Fast chapters hit like small fireworks: a clue spotted, a red herring unmasked, a pulley jammed and then freed. Humor never bites, suspense never terrifies, and the prize isn’t glory but belonging earned by showing up as yourself. The Cracked Tile Countdown is a cozy, crackling adventure that celebrates neurodiverse smarts, teamwork, and the hidden history stitched into every city sidewalk.