piece something together
Definitions: 1. to join parts to form a whole/to form a whole by joining parts 2. to join pieces of information to compose a story/to compose a story by joining pieces of information
Examples: 1. These bits of paper have to be pieced together to make a picture/A picture has to be pieced together from these bits of paper. 2. The police are still trying to piece together the clues/piece together a full account of what really happened.