Edited: A Note On Points
For team players:
Upon further reflection, I've decided that it would be a handicap to not allow each player to collect the available ten points for a correct guess, since I'm dividing your points totals by three. So, for the two teams, each member can claim the ten points for each crime element by collecting the card.
For all players:
If you have collected all of the cards for your own game and want to continue to add points to your total, you can either collect 5 points for "unused" cards by reading them, or you can invade one of the other games and claim 10 points from their crimes by reading and collecting their cards. This would allow you to duplicate cards you've already collected by reading another book that qualifies for the specific card.
If you've read a book since the beginning of the game that you've not already used to play a card, this is your chance to up your points total!
Race to the finish line!