This is a really funny murder mystery routine. The zippered "case" (used to house everything) is "re-opened" and the possible weapons and five laminated clue-cards are removed. With your help, the spectator now deduces which of the weapons was used. Once he's done so, you explain, humorously, why the other weapons couldn't possibly have been used, so he's effectively solved the murder! This means that everything can be returned to the case, which can then be officially closed.