eleventh hour (noun)

1. In the eleventh hour, the protagonist finally realized the true identity of the ghost haunting their house.

2. The client made significant changes to the blueprints at the eleventh hour, causing delays in the construction process.

3. The author's twist ending came at the eleventh hour, leaving readers shocked and eager for the next book in the series.

4. The artist added the finishing touches to their masterpiece at the eleventh hour before the art exhibition.