Sure!
The easiest way is actually understand it's another mystery. You build it like another mystery but ask every player how it is tied to their character.
You can have a maximum of 8 suspects in a Season Mystery, that means you can have a total of 8 questions you can ask after the mystery has been solved. To solve it you’re going to need to place 5 clues on a suspect if you’re playing with 4 or fewer players, and 6 clues if you’re playing with 5 or more players.
There are two additional rules for the Season mystery. The group can’t place two clues on the season mystery in a row. That means if one player places a clue on a suspect on the season mystery, another clue needs to be put on the personal or episode mystery before another clue can be placed on the season mystery. Also, you need at least 4 suspects before you can solve the mystery, any fewer and you can’t place the final clue on a suspect.
Hope this helps!