Roper v. Simmons
Simmons and Benjamin were caught and put on trial.  There was a lot of evidence of what they had done.  Simmons had admitted to the murder.  Tessmer testifid against Simmons and said Simmons had planned the crime ahead of time.  (In American law, thinking about killing someone ahead of time makes the killing first degree murder.)  The jury found Simmons guilty, and recommended a death sentence.  The judge agreed.