The Hopewell Investigations is a Clue-collection event where you unravel a mystery by collecting sets of Clues. 

Clues are awarded from events, the Mystery Pass, completing areas, and can also be purchased from the Shop and found in offers. Duplicate Clues award Stars that can be traded in for rewards in the Evidence Room.

To get started, tap the button with cards at the bottom left corner, next to the Garage board icon. This will take you to the Evidence board for the event. Each set of Clues that you can see can be completed for a unique reward. Once all sets are finished, you’ll crack the case, solve the mystery, and receive an additional reward. 

Good luck sleuthing it out!