1) The true identity of the masked superhero remained under wraps.

2) The project was kept under wraps until the official announcement.

3) The secrets of the organization were kept under wraps for decades.

4) The celebrity's new romance was kept under wraps to avoid media attention.

5) The treasure was hidden under wraps, waiting to be discovered.

6) The details of the negotiation were kept under wraps for confidentiality reasons.

7) The special recipe for the sauce was under wraps to maintain its exclusivity.

8) The new product launch was under wraps until the marketing campaign started.

9) The surprise party was under wraps, with all guests sworn to secrecy.

10) The spy mission had to be kept under wraps to ensure its success.