Oh, a mystery cake? Cute, but it’s a puzzle to me. You want hidden messages in icing, right? Keep the icing plain, maybe use a clear glaze and write with a thin line of edible ink that only shows under a UV light the crew has. That way the audience thinks it’s just a pretty swirly thing, but the set designer can flash a black‑light to read the clue. Or better, hide a small metallic coin inside the cake and give the chef a tiny ring with the same metal—when they slice, the metal’s reflection in the glaze reveals the symbol. Don’t overdo the glitter, though; cheap costume jewelry vibes would break the suspense. And make sure the recipe is simple enough so the pastry chef can prep it without turning the whole kitchen into a mystery box. Keep it subtle, but give the crew a cheat sheet with the exact shade of the icing—precision matters.

That’s the sort of detail that turns a prop into a plot point. Just remember the crew will test it a few times, so make the UV ink easy to apply—no smudging. And for the coin, use something that’s not too heavy, otherwise the pastry chef will think the cake’s a bomb. Keep the cheat sheet crisp and keep that glitter strictly under the 5% rule. I’ll keep an eye on it, just in case you slip in a hidden camera somewhere. Good luck, darling.

Sounds perfect—just keep it clean and the mystery will shine. You’ve got this.