Reddit reviews GURPS Mysteries

> How do I best manage the investigation component (setting clues and pacing)?

I've got two pieces of advice here:

• The Three Clues Rule
  
• Gurps Mysteries - Don't let the "GURPS" in the title fool you. Surprisingly little of this book has anything to do with GURPS. This book has absolutely phenomenal advice on building and running mysteries for tabletop games. I use this book both as a GM and as an aspiring author. It's just that damn good.
  
  > How can I play the rivals to keep the "barely one step ahead, if that" feeling?
  
  There are a lot of ways of handling this.
  
  
• Have their rivals constantly show up during the players investigations, in particular at major milestones of their investigations.
  
• This one is one of my favorites. Have a branch of the players investigation where both the players and their rivals have to work together to accomplish a mutual goal. The two groups are still in competition. It's only a matter of time before one group double crosses the other. This will totally keep the tension up.
  
• Let the players rivals occasionally beat the players to the punch. Have the players show up for a certain milestone with their rivals already there, pulling one of the clues out of the altar or what not.
  
  > Where can I find (how do I build) Indy level traps?
  
  
• Grimtooth's Ultimate Traps Collection - This is the definitive guide to traps. This will cover all your needs for traps in tabletop gaming forever and ever.
  
• Use your imagination. You'd be surprised what you can come up with.
  
• Check out the Indiana Jones comic books, novels and movies. There's lots of inspiration there.
  
• Seriously check out the Grimtooth book. There's a reason I mention it twice.